I'm going for the EVO (or GS III). I thought I'd be getting a Galaxy Nexus for sure, but when I read about the EVO 4G LTE I totally changed my mind. Here's my reasons:
-Better S4 A15 CPU @ 1.5GHz (the G Nexus still has an A9 CPU) Its almost like 'Core i7 vs Core 2 Duo'
-The dual-core A15 based CPU is just as fast as quad-core A9 CPU in benchmarks
-Better & WAY quicker camera (the camera was just OK when i used it in the Verizon store)
-I have a Nexus S 4G with ICS [rooted], the Galaxy Nexus was faster, but not by much (to me anyway...)
-The bigger battery
-I really like the ICS interface, but the light-weight Sense 4.0 just looks so fast (it could just be the speedy S4 though)
-The Super LCD-2 screen (although I haven't seen it in person...)
In the end, I might root the EVO with a bloat-free ROM anyway (or root only). The Galaxy Nexus is a good phone, but the EVO is a better choice for me long term (it should run Android 5.0 better than the Nexus).