I had a VX 6700 for 2 weeks. As a Palm user for many years I thought it was the best PDA I'd ever used and it convinced me to switch to a WM5 pda. I'll be ordering my Axim next week
Having said that it is slow.
As a phone it is terrible. The main reason I returned it is that I found the phone to be unusable. Dialing a touch screen while driving (not that I would do that) is dangerous. Volume is too low, speakerphone is terrible.
I almost added another line to my account to keep it as a PDA with always on high speed internet. Then I decided it just wasn't worth the money.
Check out the forums at
www.pdaphonehome.com and
www.howardforums.com for other opinions.
I've read plenty of messages from people who love it so YMMV.
Good Luck
pvision