I don't like Bidvertiser but I think their bid per click is higher while Obeus still new and click range from 1c to 6c I guess but they pay by egold with 1$ minimum so Obeus is best place to advertise if you have digital currency like E-Gold,E-Bullion or Pecunix and Bidvertiser for PayPal
I would be careful of programs that pay via E-gold, there is more likely to be fraud happening in the actual site and therefore may become a goner before it even takes of.
i got both but prefer obeus cause 1 its ptc friendly and im admin on a ptc 2 i like getting 40% downline earnings so obeus for me, i have a blog that talks you through how to set it up for anyone who is interested, if you havnt joined i would appreciate the sign up its all in the blog http:// obeus-adsense.blogspot.com close the gap to make the link work