I hate to ask this common question. I know it has been discussed, and I have failed to find it searching the forums. Hence the title.
I have an older Trek road bike with an 8 speed Shimano RSX rear derailer that is starting to malfunction, and I want to upgrade it as much as possible when I replace it this weekend. I would like to convert to a 9 or 10 speed rear cassette, but right now all I can afford is a rear derailer and possibly a chain (pedicabing is slowing down this time of year in Austin). What do you suggest?
Oh yea, the front is a tripple, but I would like to have a double. So if you want to recomend something with that in mind please do so, even if it means just taking off or not using the small chain ring.