If you like HKs, and have experience with them, try the P2000sk. Comes in 9mm and .40. I have the 9mm V3 and it is the best subcompact gun I have ever owned, shot, or carried (I stress subcompact because my P30 is still my favorite). It handles better than many fullsize pistols I have experience with (Sigs, Glocks, S&Ws). It is ridiculously accurate and handles +p and +p+ (preferred carryammo for me) ammo extremely well. Added bonus, it will take USP compact (13 round) and P30 (15 round) mags for reloads. If the sk doesn't do it, there is always the Sig P239. It's a single stack, but a great pistol also (was my primary CCW prior to my P30 (compact) and P2000sk (subcompact)).