I've been wanting to get off of Verizon for quite a while and actually the Nexus4 made me want to jump (as of 2 months ago) but then I read the Nexus 5 was coming out so I waited. Everyone in my neighborhood has Verizon so I can't check network coverage. I so badly want to switch to straight talk and an android phone from my current iPhone4 that runs like shit on iOS7 now.
I've never bought a used phone before so shopping on ebay or craigslist scares the crap out of me and taking a chance that it's good to go.
Checking sensorly.com it shows I shouldn't even have Verizon coverage where I live even though I have 5 bars all throughout my house and area.
Check out Swappa.com or CellTraderOnline.com. Have bought and sold a few on both sites.