I've owned several Glocks over the past 5 years (19, 26, two 22's), primariy because I was looking for the right blend of features/capabilities. I was looking to satisfy the following needs:
1 - Concealed carry
2 - Home/Camp protection
3 - IPSC competition
I identified the .40 S&W as my cartridge of choice for its blend of power and capacity.
I finally settled on the 27 for my carry gun, and the 35 for my competition, house protection weapon. I can quickly remove light/laser unit and prepare for IPSC, and have a highly accurate, dependable, and powerful handgun. I find it to be ugly in appearance but love the way it shoots.