More input? What else can really be said. The best way to go is to test both out and decide for yourself, or find people who have used both services in your area. The first option might not be feasible and you may not have much luck with the second.
So your down to cable being $15 dollars cheaper a month, though DSL prices are dropping. (If you go with cable, I'd buy the modem, dont rent one...not worth it). I am using Bell-atlantic dsl for $39 a month now, price just dropped last month. I used to use cable but found it to be somewhat slow at peak times. Again, this really means nothing as I am not in your area.
I have found DSL to be very consisent, but then cable wasn't all that bad in this area either. Again, try to find those who use the services your looking at in your area and it will most likely be an easier decision. Most likely, you'll be happy with any choice you make, if you are still using a dial-up isp🙂