I recently have purchased a Gen 4 G17 primarily for the purpose of home defense but also because I enjoy range shooting. I have been doing a lot of research into what type of 9mm ammo to use for home defense but I thought it best to take this question to someone who knows much more about it than I. This article is perhaps the best posted research on the subject I have seen but I wondered about its practicality in the real world. I've read that higher (127+) gr weight hollow points are a good direction to go. I first was really interested in the Winchester Ranger-T 127 gr JHP +P+ but I've seen some really negative performance reports on this ammo lately, usually related to poor expansion. Now I am looking at Speer Gold Dot 124gr JHP +P. While its smaller than I was hoping (and I still might move up to the Speer Gold Dot 145gr JHP), I have heard good things about its reliability and effectiveness. Thoughts on either of these ammunitions? Ideas about other good self defense ammos?