Will they be next to each other (i.e., adjacent cabinets)? How different are they?

We also used 2 different manufacturers for our hardware...Siro drawer pull & Dec Har knob (the Dec Har had a longer stem which gave us more "finger" space; the Siro had a nicer looking & more substantial drawer pull.) But, the antique iron finish in both lines was very close...you had to really study them to see any difference. Even when they're next to each other (we have two 6" filler pullouts w/knobs flanked by drawers w/drawer pulls on each side) you can't tell the difference.

Yes, they will be next to each other. The knobs will be on the cabinet doors which are mainly above the counter. There are also 2 doors under the sink. The drawer pulls are all below the counter.

The knob is all one tone with a cutwork design. The drawer pull coloration varies from dark oil rubbed bronze to a lighter shading around its edges. That is what I like about it.

I used different companies for my cabinet hardware and they look fine together. The hardware is a very small part of your kitchen, and, as you will discover when it's finished, your kitchen is much more than the sum of it's parts. If the whole thing works together, no one, not even you, will notice.

The finish can be different on different style hardware, even from the same company, because they don't actually manufacture them, they buy them (probably from some company in southeast Asia). Go with what you like.

The only way to tell will be get a sample of each and put them next to each other.

We used Top Knobs hardware, but we wanted a backplate for our ORB knob. But Top Knobs did not make one. I ordered samples of ORB backplates from a bunch of different hardware manufacturers and found one that looked pretty good. The finish was a little bit more matte than the Top Knob knob, so my KD sprayed it with something to make it match more, and it looks great. If you really focus on it, you can see that the finish looks slightly different, but it just looks like a design element.

I have antique pewter pulls and knobs on some cabinets, both from Top Knobs, and the finish is more different than the finish on the knobs and backplates from two different manufacturers.

Seems like with the dark/light variation on the pull and the cutwork on the knob, any color difference would be difficult to notice. We used hardware from Amerock, Top Knobs, and Anne at Home in our kitchen, and I think they all look great together.

If the darker colors match pretty well, then I think you're fine. The lighter color is additional....more of an accent.

The more I think about it, the more I think they will probably look very nice together. (I tried finding the ORB finish you were talking about for Emtek but was unable to find it.)

However, I agree w/Jeannie...order a couple of both and compare them. That's what we did b/f we put in a full order for our hardware.

Thanks for looking for the ORB finish. None of the websites gives a good picture. I have samples of both - they do work together. I also have a Deltana Shell Pull in ORB which matches better but I don't like it as much.