Which router for o2?

[SpudMaster]

Was using a Netgear dg834gt router on my o2 line and was more than happy untill a few months ago when o2 changed something that doesnt seem to agree with his router anymore. Now ive managed to stop it losing connection but it connects at speeds slower than it used to and slower than what my o2 Wireless Box connects at. Unfortunately im having other problems with the o2 box which i cant seem to resolved so still using the dg834gt.

What i want to know is what router are other people using and recommend to use with o2?

Thanks

 

[SpudMaster]

I would use the o2 box again but I cant get my gf's pc to connect to it wirelessly anymore, not sure why as it used to work fine, and i cant host games in Left 4 Dead as i just get disconnected soon as the game starts which is very annoying as its what i play the most. Tried fixes some of the fixes suggested but they dont seem to work for me.

I dont have the above problems with the dg834gt router but it doesnt connect as fast as the o2 box which is also annoying as until o2 changed whatever they did it was faster than o2's box!

Not sure what revision my o2 box is but its looks like this: