I really can't say I support any Study Bibles either. I have a Thompson chain, but that is not exactly a Study Bible, more of a magnum reference Bible.
I also have a Schofield, but not so much for the study feature, but I like the way he has the little sub-titles throughout the text, it makes things so much easier to find.
Lately I have been using my Cambridge text only Bible, and really enjoying the lack of all the clutter that you usually find in most Bibles. Now if they had just left off that self pronouncing word feature, you couldn't get any better.