STB is plenty stronger than I, but I wouldn't switch just to switch. If it's in there, it should be b/c it will drive your lift up. If you're still getting stronger on it, I don't see why you'd take it out...it's in there for a reason.
If progress stalls on something, you could swap it out for a close variation that does something similar, or you could figure out why you've stalled and fix that. Swapping out something like close-grips for incline db presses doesn't make much sense to me unless there's a good reason. That they are different lifts isn't a good enough reason to me.