I play world of warcraft on a local server and get pings of 150 to 300 in the morning and during the day.....but it does shoot up to 700 sometimes at night, but still playable. I notice no difference after cap. But if you like FPS I would say go ADSL.
And games are not for kids!!!
You obviously never had playing blocks when you were a baby slimothy
I've been playing WoW on the SmolderThorn server in the US, and have had comparable (and sometimes better) latency than a friend of mine on the same server who has ADSL 512...