Just use it! Just Kidding
Seriously, people seem to say, using the standard email (VersaMail) will cause issues, so setting that up is one way.
Others may be 3rd Party apps, but I don't know any specific ones that cause issue.
I'd be curious on the 755p if the VersaMail issue causes resets? Is there a lag time between switching apps (from say the phone to Web)?
Any feedback you can provide on the 755p may give us an idea of what to expect from the MR for the 700p if it works as the 755p OS. A big IF perhaps.
Fingers crossed for a MR coming (actually released to users) the week of May 28th and not some run around from the carriers rolling out. I hope the 700p MR is working by mid June (iPhone release date

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Palm, be afraid, be very afraid.
Remember what drives change in general: Fear, Sex, or Greed. The second doesn't apply here (I don't think). The 3rd is a motivator, but the 1st tied with the 3rd is very strong.