I also am a Verizon xv6800 user and I have cycled through my share of ROM flavors. and 2 different kitchens (DCD, and PPCKitchen).
i've landed on the No2Chem 5060 build, using the Geeks kitchen.
this gives you the Windows Mobile 6.1 by default (any custom ROM would typically be 6.1).. happy as a clam. GPS, more reliable, no crashes etc...
Read through the Upgrades section here - i know there are a couple of specific threads about upgrading the Verizon.. you'll want to first upgrade to the latest Radio, before you flash a new 6.1 Rom.
can be a little daunting, but read , and then read some more..
here are a couple threads to get you started.
HERE.
HERE.
and
HERE.
somewhere in there you will also find a visual step by step tutorial by yours truly.
main thing is to get past the fear of upgrading the Radio and 'flashing' the phone.
Then you can just take your pick of the custom Roms that are out there.
most popular is of course the No2hem flavors, by way of the PPCKitchen..
good luck. post back any specific questions.