Whatever you do, DO NOT get AOL broadband! I used AOL broadband for about 3 months this past year and absolutely hated it! I had the aol broadband through time warner cable and whenever I called AOL tech support (which was a lot,) they always told me that they couldn't do anything about the problem and told me to call Time Warner Tech support. After a few months I just got rid of the AOL broadband and decided that hell, I'd rather go back to 56k MSN then deal with the crappy AOL broadband.
Personally, I prefer Time Warner's Road Runner Cable internet connection over anything else. That's what all of my pals use and it works absolutely flawlessly for them, and not to mention that it's faster than hell. Unless you are within like a 3-mile radius of a place that offers DSL, go with a cable connection. I'm not sure how good Comcast internet is, because Time Warner has my territory covered (which is a suburb of Minneapolis, MN) but I'm sure it's great. My advice for you, go with the cable internet connection. If you can, I'd say get Road Runner. But, whatever you do, STAY AWAY FROM AOL BROADBAND!