@Yokel some recommendations:

BTN from level 7 to level 8. It's definitely a great TV tracker and it's more rare than ever.

Pedro from level 8 to level 7. It's good for lossless music, but the last years it's easier than ever to join it, since they give invites even to simple users too often.

BrokenStones should be AT LEAST level 4. It's the best tracker of its kind and after the recent changes it's not that easy to get invites any more.