Unlike most others I'll actually answer your question, without spamming ref codes ;)
From my experience, the top few are (in order):
1) LiveCamNetwork - Was incredibly fast and clear (with a large window) before almost any other.
2) One2One - I haven't visited in a bit, but like LCN, they were ahead of most others.
3) PrivateFeeds - Who else offers broadband-quality video in free chat? Okay, a few now, but they did first.
Note: LiveJasmin and Streamate both offer high-quality (if not HD) video but only for certain performers. LJ has specific software that not all models use, for example.
