Although I'm not a heavy RSS user, I have found "FeedPot Free" to be more than sufficient for my needs. It has Google Sync, cache for offline reading (with the choice to cache images, if wanted). The feed update is relatively speedy. Has folders, search function, starred items and has been stable on my 1st Gen Touch. The only downside that I have found is the lack of a landscape mode. The free version has a small ad near the bottom of the screen (approx. 10% of overall screen). I would definitely recommend this for a casual RSS user.