Back in the Froyo/Gingerbread days, GO was my go-to launcher. It had more features and better performance (in my opinion) than any of the other options. After Ice Cream Sandwich, however, I kind of forgot about it.
Turns out the GO Team is still alive and kicking, and it just pushed out version 5 of its EX launcher, complete with a new flat theme and improved functionality. If you're tired of the same ol', same ol', this may be exactly what you need to breathe some fresh life into your device.