Cateye Stealth 50 with gps and ant+. Works with my garmin cadence/speed sensor.
The gps isn't the best but when you add the magnet to your wheel it works perfectly and doesn't short you any miles like running just the gps.
I've used the garmin 500 and 510 in the past. The 510 was my favorite and if I wanted to drop a bunch of dough I'd have bought it again.
I only paid $80 for the Cateye and it's serving it's purpose well and giving me all the info the garmins did.