I would get a Beretta M9. Then you can have the size and weight of a full size 40 or 45 auto, with the lower recoil and lower effectiveness of the 9mm.
Glad you are enjoying your 9's. We are lucky to have 9mm rounding out the 9 vs 40 vs 45 debate. If the debate were 380 vs 40 vs 45, 380 would really be too weak.