HP h6315 / h6310 / h6320 / h6325

what do you guys suggest? I get the hp 6135 or the dell axim x30 w/ bluetooth gps. I could really use the gps with the pda but theres something cool about being able to make calls from your pda. HP does offer the gps piece but for an extra $330, while dell's package is $510 for pda and gps.
so which do u suggest?? the hp with gps, or the dell with a new sidekick for the internet usage?
😳 🙄