go to Dimarzio.com, go to pickups, click strat, and you'll find lots of mini-humbuckers. I know SD also makes a few Mini humbuckers besides the hot and cool rails that you could check out.
The Dimarzio Air Norton and the Fast Track 2 are nice, but they're on the warm side, and the Cruiser is a nice brighter one
As for Seymour Duncan, I really like the JB Jr.