I'm no expert, but this ^ is kinda what i've gleaned from this thread.
I have a 3071 56T .82 and love it. Not having had a 3076 or any other Garrett turbo i suppose it's easy to say that, however i don't think the differences in trim and comp wheel size are really worth fussing over *too* much.
(This all assumes that the rest of your setup is sorted)