With the DSL connection I'm using as i type this (from my parents house) I get 103ms to yahoo.com and that is including a trip across the pond.
At home I got cable, which I, although faster, think performs a bit more unstable and generally with higher latency than the DSL. But the difference isn't big though, and could just as easily be because of local conditions (It's through two different companies)
OTOH if I wanted DSL with my cable's speed it would cost quite a bit more and I've come to love the 4x(+) download speed.
If the price/bandwidth was the same I would pick DSL simply based on my own experience.