ummm i've had both didn't have a problem with either, i would say its mostly dependent on your isp and how much of a my love muffin they are heh. but right now i have 4mb/s cable and i'm quite happy with that.
oh just for the people who might bethinking of getting dsl, you might consider this saw it the other day:
http://www.speakeasy.net/promos/bribe/?source=hp
basicly its a free ipod if you go with speakeasy lol
ipods kick
-rad