If you just love the size of the 26 by all means grab the 27. Me personally, i would get the 23. I have one and i carry it everday. To me its the perfect size, and you can get a full grip on it; no need for grip extension. I also have the 30sf but had to send it back to Glock for repair. I would say no to the 30sf but the reg 30 may work better. The .45 Glocks shoot so sweet, better recoil than the .40's. So, my final thought is, the G23 is a no-brainer and the 30 is hit or miss(although i still like it). Hope this helps and keep us updated