The Glock rep was at the Bullet Hole in Belleville NJ. He brought a caseload of guns, allowing people to test different models for $5 a piece. (The $5 was the store's charge for ammo - 10 shots) I fell in love with the Glock 37. Accurate! Moderate recoil! The rounded edges give the gun a very cool look. I also tried the 38 but the 37 just sat better in my hand. I also tried the .357 Sig compensated. Not my cup of tea. If you're in the area the rep will be at the store all day tomorrow. Come early. It was a mob scene when I left today! And sorry, the rep DID NOT have the Glock 21 SF.