Default GNEX I9250 help!

So I am getting a Galaxy Nexus carrier unlocked,I assume it's GSM.(non-verizon)-I9250.It's also quad-band if it matters.

My friend has a Verizon version and I unlocked his boot-loader,installed a 4.4 stock rom, and side loaded some apps.
I've had an android phone before, but haven't used one for over 1 year.
Still pretty confused how I managed to remember some of the stuff.

Assuming I unlock mine(if it isn't already) does anyone have a nice fast rom they've used?
I won't do much on my phone, email,browser,music, etc....

I was looking for MIUI V5 rom, but only found the "toro" version,which I assume is the verizon variant.
I think my phone is "maguro",which has HSPA+.

So can you guys set me up with the best "stock" rom and a MIUI rom aswell?
Don't want to flash a CDMA rom and brick my phone before I use it.....