Top left: Polymer Stainless, stopped counting rounds at 10k. I blasted the grip safety (it had a brushed finish), changed the trigger, and installed a rescomp mag catch to use P14 magazines. I think I got the last one brownells had.
Top Right: Compact Stainless. I had Mepros installed, otherwise pretty stock. Former EDC.
Center: Stainless. The trigger was changed by the previous owner, and I had a night sight put up front. Pretty much a spare in case my EDC breaks. Unlike the rest of my guns, this one still looks new. The previsous owner said he'd bring me the old trigger, but he got moved to a different zone, then I got married, so neither one of us are at the range as much. I guess I could swap the trigger with the compact so my twins are twins again....
Bottom: Classic Stainless. Other than the rollmark, I cant find a difference in this one and the regular stainless. Got it from a buddy for $500, and it replaced my 4" kimber for EDC.
All are series I, and have had the correct guide rod (or a cut down FLGR) and matching plug installed. Except for the 4", it has a short guide rod, but its a little too long, so I had to leave the open spring plug.