I've been in experimentation mode for a year or more now. What started at the beginning as a "reduce the unnecessary kit" blossomed into a "neat gear that has interesting qualities" game such that I now have more equipment than I have time to use. But lots of options to play with.
However, when it comes to "what do I use most of the time nowadays", that's going to be either the M9 and a couple of lenses, the X2, the E-PL1 with a pinhole/zone plate, or a classic 1950s 6x6 folder. Mostly the M9 or the X2, it seems from my LR catalog based on quantities of photos taken.
Here are the percentages for 2012-2013:
All film cameras 7.2