You are looking at the same two brands I decided between. Not sure which model you are looking at, but I have Wolf and 5 of the 6 burners are the same while the sixth one has extra low capability. I use it for some small pots or delicate things but don't use it for my canning or pasta pots. Other than that, no difference. I can tell you that I can melt butter and chocolate on the burner without constant attention and don't know that I have used a double boiler since we got the rangetop.

For me, I prefer more burners that are a similar size. But most important to me is that the "biggest" burner is in the back. It seems that now many of them have one very hot burner and it is usually in front. I do not want to have to reach around a big pot of boiling water to reach the rear burners. Even when I stir-fry I want it in the back so I don't get spattered so much and am less likely to spill on my kids or pets.

I had a Wolf in the last house - simmer was awesome. However, I have friends with Thermadors and Mieles and no one feels theirs simmers badly. This time around, I am getting a Miele rangetop mainly because all but one of the burners are the same, and there is a big one in the back. Wolf had the big one in the front.

lascatx, which model do you have of the Wolf? Those I have seen have several different BTU burners with the big one in the front. I'd be interested in revisiting Wolf if things have changed.

I just looked at their website -- looks like things have changed. I have a 36" sealed burner rangetop (DH wanted sealed). All my burners are the same expect the left rear one that is smaller. I would have put that burner on.the front corner, but it is handy to leave simmering in the back, so I can see it either way. That leaves me two rear burners for large pots and highest heat. One of the reasons I went with Wolf over Thermador was that the burners were the same size -- at least 5 out of 6. Not sure I'd make that choice now with the different size burners. Sad....... (though I do use the highest heat generally one back burner and on in the front -- I might be able to live with the configuration, but at that price, I wouldn't feel like I should have to make do, ya know?

The answer is Bluestar. But that's not the question you asked. If you are dealing with a gas range top, the different burner sizes won't be that noticeable when using them. Typically you will turn the burner to full on and then back it down to where you want it. That's the beauty of gas, it's so adjustable. I wouldn't stress to much over it.

I love my BS. I'm spoiled. I have had both the Wolf and Thermador in previous homes. If those were my only two choices, I would choose the Thermador because of the shape of the burner. It's very similar to the BS burner. I like it better than the Wolf double ring arrangement.

Homechef, this is some additional info that the OP put in another post.

"Is 15BTU on older Thermador enough to sear a steak and boil water quick?

Going to a used appliance store and have an option of a Wolf RTS366 and Thermador PCS366US I am not experiences with gas much.

I am really uncomfortable with the fact that Wolf burners have all different BTU."

To the OP, I am confused as to what the choices are.

If you are asking about older Wolf burners, topping at 15K, then all the burners are the same except the small pot burner in the back. If the burners are different, I think it is SRT 366, which tops at 20K and they are different sizes.

I have the one that tops at 15K and yes you can sear a steak but there are a couple considerations. As Jakvis says on the other post, use a cast iron pan. This will takes longer to preheat but the CI holds a lot of heat and will go to a very high temperature. You need to have a fairly big skillet so that you have enough cast iron to accumulate enough heat. I use a 12" skillet for a couple weeks of filets but if you had 2 T-bones you would need 14". You can stir fry but with a less amount.

Boiling water- 15K BTUs is less heat than something that is 23-25K. If it is a smaller amount of water, the difference in time might not be as noticeable. Both of these burners you are considering are capped burners, so try to see them live somewhere so you can see how this will be with your pans. I have the 15K and all my stock pots, Dutch ovens and skillets that I might heat at full blast are at least 12". My sauce pans are mostly squat and 7" wide and work well. If it is the 20K Wolf I would want to see how wide the flame is. If you stir fry a lot, this may not be the best for that.

As far as simmer, I think the small burners on both have about the same BTUs but while the Wolf has the dual stacked burners if it is the model I am thinking about this allows the flame to stay on. The Thermador clicks the flame off and on to get a low simmer. Some people do not like the clicking. I am not sure how the rest of the burners compare but both companies tell you how many BTUs the burners have on the low side.

I agree with homechef that you can and will adjust the heat as needed on different sized burners.

A star shaped burner might be a good thing if you do use cast iron, steel or some sort of stainless cookware. Those metals do not conduct heat very well. If you have heavy copper or aluminum or plied cookware that involves enough of these metals, the shape isn't that important. BS and Thermador are very different in the execution of the "star". The BS, being uncapped, keeps the flame straight up from the star while the Thermador, which is capped, widens as it is turned up.

If you can look beyond the current two choices, you might do better with uncapped burners if speed in heating large amounts of water or stir frying is important. They will keep the heat more to the middle of the pan. Consider the BlueStar or American Performer for star shaped burners or Capital Culinarian triple ring burners(all the same too except one small pot burner). It is hard to compare the simmers on these because they do not rate it in BTUs. The temperature rating used is pretty meaningless. Anecdotally most say the simmer is ok on though on BS and CC. Less is known about the Performer.