I really like my CST three point from Spectre (formerly CQB Solutions). Great product and even better service!
I have to agree with Southern on this one. The Blue Force Gear SOC-C sling is fantastic and incredibly versatile. I've been playing with one for a few weeks now, but I've not been able to put any range time on it.
I'm also getting ready to send one to my best friend who is in the SF. I fully expect this to replace the Troy Single Point he's been using for a few months now.
I'm not sure how available they are right now, but I've got a black one, new in bag, that I would part with if you're interested.