If you dont already have your mags, I would say Glocks get the nod, there are more Glock hicap mags on the street then any other moderen guns. (exlcuding 1911's) You can always get a 1911, except for para double frames, so I would hold off on a any single stack 1911's and go for a Glock. Remember all those early police mags are somewhere and they are added to all the civis. IMO the number of Glock to Sig mags is exponentially greater, this should be helpfull if we have further restrictions and should help keep the price lower then the less available alternative for along time, in case of theft or loss. This is not true for 45 compared to Sig mags or any 10mm's, but is right on for 9mm and 40 or derivitaves, with the exception of the Berreta because of US military use. If the 40 shoots from the 9mm Berretta mags then a Berreta would be a good choice as well. Without a mag a semi is a single shot!!!!! I think mags are an important consideration for someone buying a new gun at this moment in time!!! Just my # .02....