I'm another all 3-er.
Ironman with 50/34, 11-28 9 sp.
I've got 52/40, 14-24
A couple 52/42's with 28 and 26 tooth lows.
Single speed cruiser, and my two speed kickback folder.
Variety makes it fun for me.
I'm not all that gearing conscious. Ironman's the climber of choice now, but I have thoughts of possibly tripleizing another bike in the future.