Viewty or F700?

I'm looking for advice from existing users of the Viewty (on Three) or
the F700 (on Vodafone). I've already read quite a few reviews, but
these are already several months old - so am looking for something
more current!

I want a touchscreen phone and have the choice of upgrade on Three or
Voda. I'm looking for recommendations for or against either one of
these.

Or, is there something new due out in the near future - say within a
month or two - that I should definitely wait for?

Any suggestions welcome.

Chris