If you are going to stay in the house for 10 yrs, chances are whoever buys it from you will definitely tear it down and rebuild. In that case, buy what you WANT and don't worry about resale.

I agree. 10 year old appliances will either need to be replaced or will not hold much value anyway. Get what makes you happy and makes sense for your wallet. Worry about the rest 10 years from now. The styles may be completely different then.

Kitchens are remodeled fairly frequently in high end neighborhoods -- I heard every 10 years -- so your purchaser may well elect a tearout no matter what you do.

In my personal opinion, going from a builder-grade oven and cooktop to a Thermador range has made an enormous difference in my cooking and baking; there is a particular recipe I've been cooking for 25 years on all sorts of apartment cooktops, starter home ranges, etc., and its quality is improved on the Thermador. Fridges are fridges, and I'm quite content with a LG. GE Monogram is a very nice line that would be fine in a high end neighborhood. That's JMO, and your opinion is the one that matters. Buy what you want, and don't worry about later purchasers.

Blue

Agree with everyone else. I wouldn't do it as an investment - you won't get a good return after 10 years. I would argue that even more so than it used to be, appliances aren't made as well and don't last as long. Also, It's hard to predict what bells and whistles a high end buyer will want, they may end up replacing a higher end appliance just because it doesn't have that one "must-have" feature.

The kitchen LAYOUT is what folks notice first, then the appliances, which after 10 yrs someone might replace. So overall, concur with others.
of course, the real qu is, might your stay exceed 10? In which case, you want reliable and good. my views (having an apt in Manhattan and a rural pondside cottage in RI): here's where i found it MOST worthwhile to throw the bucks. In order of priority:
...Dishwasher (for quiet and eco efficiency. I am a big enthusiast of Asko and Bosch. Have had both. And have had the best of KitchenAid which doesnt even hold a candle). Love those short cycles.
... Refrig (i have had to replace a reg refrig 2 times in RI, whereas the subzero that i scrimped and saved for, and installed in 1993 is still the best appliance we own...the cooling is consistent, and no noise and a joy to store and pull things from
... Cooktop or range. Really it is more a matter of easy to clean and how much fire power your style of cooking needs. My requirement is to have 5 burners at the least. I loathe my Thermador b/c of the black glass being impossible to keep clean.
... Oven: since i am not a baker, i have this last and quite honestly have done fine with an Electric (espec because the cleanup and convection features are great) and been ok (tho not bowled over) by the electric broiler. For broiling, gas is best but also messy.

Best of luck

Is the current Sub-zero working, could you keep it?

If it were me, I'd buy the second tier (but still built-in) fridge and put more money into the range or rangetop/ovens, since you like to cook and bake. Ten years is a long time to live with a kitchen built for some future stranger's unknown taste.

The nearer term is much more important than ten years out.

We remodeled our last kitchen thinking we'd never move, and then two years later we stumbled across an incredible property that was just too good to pass up, so we made a contingent offer, which was accepted. We had to put our house up for sale that month. Our new kitchen helped immeasureably to earn us the quick sale we needed. It was mid-range for the neighborhood, but it was beautiful, up to date, and all the cabinets and appliances were in showroom condition.

Unless you expect to move in a couple years you probably won't recoup much of the cost of your new kitchen. And, later on down the road, the reverse may actually be true.

Top dollar buys you quality with lots of today's top style elements. Because of this, a ten year old top-end kitchen may actually be more datable and out of style than one that's not so top-end. A ten year old top-end kitchen may actually be a negative for someone. They may have an even more urgent "this has got to go" feeling about your beloved kitchen and mentally tack on the cost and hassle of their own top end kitchen remodel to your asking price when comparing it to other homes. If this happens, then not only wasn't the added expense recouped, but there was a hidden cost on top that you couldn't see at the time.

Just go with selections that are very appropriate for homes in your price range and neighborhood, while avoiding the most expensive stylish touches, and definitely plan to spend something to update it before putting it on the market if it's been a few years...then the only risk is that you might decide not to sell it after all!