It's still a question loaded with a bunch of variables.
The correct answer is "It Depends."
If your cable segment is fairly loaded, and the others are all running massive downloads, then Dhen DSL could be faster, even though the stated bandwidth is lower than the stated bandwidth for cable. Possible. Likely? Who knows ... it varies so much by provider and region.
Then there's "The Great Lie" of DSL - "You don't have the shared segments like cable, so you're not contending for the same bandwidth with your neighbors" - BS
All those private DSL segments aggregate back at some Central Office, then they're all stuffed through some (oversubscribed) common portal to get to "the Internet." All providers oversubscribe; there are statistical models that offer some guidence as to how much a provider can oversubscribe and not (usually not) cause too much contention for the bandwidth.
The problem is growth planning. If the provider underestimated the growth, they may not have planned for sufficient equipment at the CO to handle the additional load. Or they might just be a little greedy and intentionaly oversubscribe beyond the models such that there is real contention, most of the time, for space through the Internet port(s). Possible. Likely? Who knows .... it varies a lot from provider to provider, and various regions within that provider's service area.
Probably your best resource is dslreports.com - read the reviews for your area, read the feedback for the provider. Check out the network downtime and service levels.
You are going to know your "pain threshold" better than a bunch of strangers on a forum.
There are no absolutes. DSL is not automatically better than cable, cable is not automatically better than DSL .... I have both (Comcast Chicago and SBC/Yahoo). They both perform well, both have had great service levels (cable: 4M/256K, DSL 3M (2.6)/ 443K) and availability. Right now, DSL is less expensive, and for general surfing (and probably gaming) you probably wouldn't notice a difference.
Downloads: cable (for me) is always faster (to the same sites). DSL - better for me to remotely access my home systems (443K versus <256K).
So I surf & download through cable; I use DSL for inbound access to my network.
Check out dslreports (broadbandreports - same place).
Good Luck
Scott