I just did the same...nextel is the shiznittle bam
cingular charged me 187 dollars in overage and wouldn't cut it down a penny. so i told them i was no longer with them.
went to nextel store near me...got the NEW i870
and it is SICK...i love it.
reception isn't 100% of what cingular was...but what nextel lacks for it picks up with DC and off network walkie talkie, plus the phone is SICK
pretty much...the good outweighs the bad
ohhhhh and i get a 10% discount from nextel for working to who i work for :)