I have a friend that wants to up to 4.1 on his 7100v. Having used the CSL version on some of our 7100s I've said go with that but wonder if the 4.1 OS from O2 Europe would be better for him as he's over that way! Any advantages or is CSL still the best?
O2 Europe or HongKong CSL on a UK 7100v?
