need some help (verizon vs alltel)

[inferno1]

heres the deal, i got an alltel diamond 3 weeks ago when i renewed my contract. over all pretty happy with it...
i had a few bugs in the touch flo software, so they sent me a replacement phone today... its a verizon diamond...
first impression... it looks nicer, more square and the cool diamond cut on the back...
but some things are different in the software (after a quick glance)
no quick gps program, no internet sharing program... and the touch flow is slightly different as well...
also there isnt a 4gb internal storage, it requires an external card... which i guess is a good thing... but i need to buy a card now

so do i keep the verizon model, or call them and try to get an alltel model sent to me????

what are the pros/cons of each

(btw, any chance the gps works better in the verizon model)
thanx a bunch for the help guys
-danny