I have my Desire HD arriving today on 3, upgraded at £33p/m for 900 mins/texts and 1GB data. Have since looked at the Tmobile plans and they look better with 2GB and then a warning rather than 3s chages and are cheaper too.

I looked at Tmobile last time but the fact that they stop IM, VOIP and some video streaming put me off, not sure about network quality either.....what they like these days?

Well T-mobile has merged with Orange recently, which means they can work off each other receivers. So that might make things a bit better.

thats good. the things that worry me are the issue some have with speeds of only .3MB/s even when on HDSPA, and iplayer streaming not allowed on 3G over there network, and compressed images. 3 allows iplayer no problem and i use it a lot.