I'm undecided on .357Sig or 10mm but whatever I do choose will be an EDC weapon for when my back is hurting and the 5" Colt is too heavy. I shoot the G21 and G30 really well, have only shot a G20 for my 10mm experience and a P239 for my .357Sig experience. I'd probably lean toward the .357Sig cartridge but barrel-wise, I'd want a definitely 100% reliable and fully-supported chamber. Obviously, my two choices are a G29 or a G32 (small enough for me...the skinny baby Glocks are a bit too small, but the fatter 29/30 are fine). I know if I got the G29 it'd be a bit fatter for my IWB carry, but I would definitely get a .357Sig barrel for it. The advantage of the G29 is I can shoot both...with the G32 I cannot shoot some 10mm goodness. I have zero interest in the .40 - don't want to start a caliber war here really. I like .45 ACP, and the only rounds that interest me beyond it are the 357 and 10. Long story short - I want the most reliable and fully-supported chamber/barrel so do I start with what I will likely carry (.357) or get the less-likely model since I will upgrade for sure and be a little more $$ out of pocket but the flexibility is there? I have heard as many good and bad testimonials for KKM, Storm Lake, LW barrels and that the Glock .40 barrels aren't fully supported but perhaps the .357 Sig ones are? Am I remembering any of that correctly? Doe that make any sense or is my rambling somewhat coherent?