Oink is primarily a music torrent site, and it'* very selective. The encoding info of the music has to be disclosed, and improperly named or tagged files are deleted. The torrent files aren't shared outside of the site, and the share ratios of the users are great. Everything is well seeded (I never spend more than a few hours downloading something).

ie I can get UK Grime music in FLAC format

I have had great luck getting my bigger torrents from http://thepiratebay.org as long as you know how to search.

I still use Limewire for music though.

Considering thepiratebay is the largest torrent provider, it'* not surprising they have a large selection. But I prefer demonoid the most (which is #2 tracker), and oink for music. When I'm SOL on those two, I go to thepiratebay.

Limewire sucks. :P