As I posted in the Nexus thread, the radios on the N6 have me sold on it:
Network
2G/3G/4G LTE
GSM: 850/900/1800/1900 MHz
CDMA: Band Class: 0/1/10
WCDMA: Bands: 1/2/4/5/8
LTE: Bands: 2/3/4/5/7/12/13/17/25/26/29/41
CA DL: Bands: B2-B13, B2-B17, B2-29, B4-B5, B4-B13, B4-B17, B4-B29
No need for carrier specific variants, great for those of us that do prepaid and like to have options. Barring any significant flaws that are found once it starts shipping, this will be the phone that replaces my N4.
Speaking of the N4, I'm really hoping I don't have to wait long for the 5.0 update. I'm already considering trying out the first 5.0 based rom to come out for it now that the AOSP repos have been updated to 5.0.