Talk mobile - anyone used them?

[HarryHornby]

Hi all,
 
Talk mobile are part of Carphone Warehouse, they are offering some cracking deals at the mo using Talk Mobile, their own mobile service provider piggy backing off the back of vodafone
 
Before I make the jump has anyone used them?  I'm getting mixed reviews off of the web, same with all things, some good some bad.  Just after some extra foccer reviews.

[goldfazer]

Never used Talk, but the Voda n/w is very good.