I've been using AresLite for years now and it's never given me any problems. No spam or pop-ups, which is great.

The downside is that you may not always get the link to download because the user might have turned off the option to share, so it'll say 'Connecting' for a while. If that's the case, move on to the next one.

Whatever I can't find there I just end up buying on iTunes.