Having tried a lot of different stuff, I've settled on simplicity, reliability, and low cost. Go with the 3.5lb GLOCK connector (which you already have) and order either a Glockworx or Wolff reduced power spring kit. That'll give you a nice, crisp, reliable trigger. Plus it'll only cost you $8. The key is to replace the springs regularly (2k rounds) to avoid light primer strikes. For a little extra money, a Jager or Glockworx extended firing pin will ensure 100% reliability with all primers and the lighter springs. I've got 20k rounds through this combo and love it. It's not as light as some of the trigger jobs out there but it also costs next to nothing and always works. I just think it's crazy to drop $250 on a trigger for a $450 gun. I've found time and again that chasing a super light trigger in a Glock leads to problems. That isn't to say that the Glockworx, Glocktrigger, Vanek kits aren't good, they just aren't THAT much better than what I've got IMO.