It seems to me owning at least one well made 9mm is wise. I just purchased a Gen. 3 Glock 17. I don't see how you can go wrong. I own a Gen. 4 Glock 22 and for the .40 cal, the 4th generation changes make a big difference in how the weapon handles IMHO versus my Gen. 2 22. I'm thinking the Gen. 3 17 is one of the most ubiquitous 9mm pistols in existence. I much prefer the ease of slide manipulation with the RSA on this version as I carry condition three.