i have a calloway upro, and i think its great. i got it for $100 used (actually, it was refurbished), and spent about $50 before they went to an unlimited download plan.
with that being said, i love playing with people that have lasers. the extra accuracy to the pin was very helpful. i have a problem where i can't tell how far back, or how far forward the pin is. even with a red/white/blue flag, or even having a hole location sheet, i'm still off by as much as 5 yards, which could be the difference between one club or another.
you guys have convinced me (though i was already 99% sure i wanted one), to get a range finder. christmas will come early!