Mushkin all the way. Best warranty on the market. Lifetime warranty no matter what voltages, timings, etc you run through it. Performance is also consistently top-tier among benchmark tests. I've been running 6 GB of Mushkin DDR3 1600 in my rig for over a year now with no drama whatsoever. I've had buddies who've run Corsair Dominator RAM that's failed on arrival and a couple months afterwards. I'd stay away from them. I like Patriot, in fact I run Patriot memory in my HP Mini 311. I don't have any experience with G.Skill but I've heard nothing but good things about them.