From what I've read on this forum board it's kind of hard to describe when a cassette is worn and needs replacing. I don't like going to my LBS for this kind of thing because, well, I find bike stores too expensive and I can replace it myself. Maybe they'd evaluate it for free but then I'd feel guilty for not having them do the work. So, can someone here tell me if this cassette needs replacing?
I don't think it does. Shifting still works great. There are a couple of cogs that are starting to get uneven shaped U's, I don't know how serious it has to be. I don't know how many miles are on this bike, a couple thousand maybe? I've replaced the chain once and the current one seems to be fine based on the chain checker I have.