The MS3 and M3 are both fun to drive. The M3 is a bit more track aligned with mostly suspension and power mods, while the MS3 is my daily driver. Most mods on the MS3 are for creature comforts - axxess ipod, hardwired v1, custom garmin gps install, etc. Slight power mods though too with the ms cai, txs rp, forge bpv, su mount, etc.
All pics taken with my 20D, lenses below.
#1 70-200 f2.8L
#2 60mm f2.8 macro
#3 sigma 10-20 (my uwa has recently been replaced with the tokina 12-24)
#4 24-105L
#5 85mm F1.8
#6 70-200 f2.8L