Iron Gearmakes great replacement pickups for Strats. I have Fat 50's in my Strat and really like them. So haven't changed them. But I order the Texas Loco for my Yamaha Pacifica but haven't changed them out yet.
Give them a look. I've heard a lot of people rave about them and they are reasonably priced.
[u]Guitars:[/u] 2014 PRS Santana, 2013 PRS Paul's, 2009 PRS Hollowbody, 1972 Gibson ES-325, 2012 Fender Strat American Standard, 2012 Yamaha Pacifica, Martin M-36, Martin 000-15M, Seagull S6 Classic[br][u]Amps:[/u] Fender Blues Junior III, Boss Eband JS-10, Line 6 POD 500X, Quilter Microblock 45