[ROM][AOSP][4.2.2](3/3/2013) "Shiny", OTA-Like, Stock Android 4.2.2 JDQ39 - No bugs! - [VZW] Galaxy Nexus Development - RootzWiki
It has the closest stock experience and the support has been great. I am on 4.2.2 with Lean Kernel and there are ZERO issues with this setup....buttery smooth.
This was my first Android device, so rooting was new to me as well. Like Dezy says, Wugs Tool Kit is very helpful for unlocking / rooting. After you flash the first time, it takes 10 - 15 minutes whenever a new version of the ROM comes out.
I have friends that have S3 and Note 2's and they cant believe how good my phone works.
Let us know if you need help, thats what the forum is for!
Samsung Galaxy Nexus - Shiny , Lean Kernel, Nova Launcher Prime, CWM Touch
Samsung Galaxy TAB 7.0 Plus, Nexus 7