I'm at 53/39 12/25 but I essentially never get out of the 34 chainring and we've had some brutal hills that I'd like to ride but can't effectively ride without blowing up w/my current gearing.

I bought an inexpensive compact 50/34 and will probably just keep it in the 34 most of the time. I could run a single chainring up front but I'd just like to keep it simple for now. I'm running a compact on my road bike so at least I'll be more familiar w/the feel of the gearing.