My best converting site is the back button.

This question always comes up. very few successful webmasters will honestly tell you.

And you asked the question the wrong way.

I play poker if someone asks me how to you play AK. I ask them what position, tournament, cash, stack size to blinds etc.

Give more info.

If you ask me what is my best converting site in the Asian niche I can give you an answer of site x.com

If you ask me what is my best converting site in the asian niche with tgp traffic it may be site y.com

And the difference can be HUGE!

Conversion ratios are only half the story as well. Someone mentioned that their conversion rates made them feel good when looking at others.

here's a scenerio - I create a site (very clean, no agressive links etc). I may get 1 sale and convert at 1:200 on pure banner clicks.

I create another site w/ same content and sponsor but am much more aggressive, and may push as far as I can and make 3 sales at a conversion of 1:1200.

Your ratio may be better but my checkbook is better!

IF anyone has a niche and type of traffic they send to that niche and I market i can offer my experiences if I market that niche with that traffic.

Just unfiltered junk traffic I have no idea. i guess what Max says whatever is new and at a good price. With this traffic I usually send to a low trial pay per signup sponsor as it is not filtered enough to take a chance on a non trial or to see if it recurs.