Tried some 3.x builds but just could not get them to match the performance of 2.2.1. Also, 3.x has pesky ads and apps, if I wanted bloatware I would not use utorrent at all. For me 2.2.1 lets me add the RSS feeds that I want and then I can forget about even looking at it, it just does the job. I've also helped some friends use 2.2.1 instead of 3.x. What would the reason be to use anything newer?