Compared to DSL or Cable ISDN is a total joke so rule that one out for sure.
Cable in general is more stable and will give faster Dl's, people will tell You DSL is better because with Cable you have to "share" your connection, however this isnt really what it seems, if you get lets say a 1.0mbit down 500kbps up set up like I have many will say that if someone in your "grid" has it aswell that you will share that 1.0mbit, that is a falsehood, you are gonna get a true 1.0mbit for sure no matter if people all around have it too, plus with most cable setups you get a static assigned IP that never changes, as you do with DSL aswell. I had dsl when I lived in Corpus, but when I move to Victoria I got Cox@home Cable, I am VERY happy with it, i get excellent gameplay and i usually Download at anywhere from 75k to 110k a second no matter what time of day, 128k is the max you can get with a 1.0 mbit connection.
The only time I have ever had what many people mistake to be the "connection sharing congetsion" is when one of my ISP's backbones went down, the problem was the fact that their backbone was overloaded, not my connection, many people will get a slowdown during prime time and assume that its because they are sharing a connection with their neghborhood, but if you use a simpl tracerout util 99% of time you will see that nay slowdown is usually at your ISP's gateway, so the whoe "shared connection congestion" that people bash cabel about is largly unfounded, we back when cable first came out people DID share connections, but that was phased out as bandwith and equiptment prices fell. If you get or have cable and you are getting congestion i would squeak at your isp, because if You sign up for say 1.0mbit, by law you are to be guarnteed no less that 75% of that speed, the only exception is when there is a down router/backbone, or other ISP related equiptment problem.
I would for sure go with cable, if the cable service is horrid, THEN try DSL but cable is usually faster. forget ISDN
[This message has been edited by TheWobble (edited 01-13-2001).]