Here is my experience with the Nexus after 7 days:
Phone reception is fine, data reception is another story. IF I keep it I will hold out hope a baseband update can make data reception stronger. The G Nex has yet to see 4G in my apt. I put my razr on my window sill, was showing 1x, was about to wait to see if it would connect to LTE and I forgot it was on cdma. I set it to LTE. It lost signal, went to 1x, 3G and 4G in about 3-5 minutes. The G Nex in the same spot never saw 4G after 2-3 hours I just gave up. Toggling Airplane mode, networks didnt change a thing. My case is extreme cuz for me to even see 4G in my apt is amazing.
Earlier my RAZR dropped the connection going from a good to a weaker reception area. Aaww... At the same time...the Nexus went to 3G and stayed there. Yeaaa. Wild part is when the RAZR got LTE back...the G Nex was still on 3G. ??? I tested the Nexus and it really was still on 3G while the RAZR had no connection, web page was still working on the Nexus. Nexus eventually got 4G back, but after the RAZR did. And that was with the RAZR dropping the connection all the way.
Was using Wifi in my apt on the Nexus. Went outside, took it off. The switch over from no signal, 1x, 3G 4G was fast. Same scenario with my RAZR one time...it was slower with me probably having to toggle Airplane Mode and networks to get it back.
In a really good reception area, the G Nex was consistently faster than my RAZR by 5-6 Mbps, so it aint the hardware with my phone, cant be. It shows it can perform, right? So what in the world is going on....lol.
Between Moto, Samsung and HTC....Moto and Samsung have their own LTE chips, HTC is using some by Qualcomm. I think the Qualcomm one might be the best right now between them for LTE, followed by either Moto or Samsung. Or maybe the antenna being on the battery door helps the Rezound. I havent tried 4.0.3 radios, wont unless I decide to keep it. Maybe software updates will help both phones, or both phones need to be exchanged.
And ppl really need to stop going by bars n decibels when comparing the G Nex to another phone or for reception in general, just go by real world use.