The stats of the 2 sites are as stated below (as for standard member):
JzBux
$0.01 per click
$0.005 per referral click
$3 minimum for cashout
6 ads minimum daily
link to join - http://jzbux.com/?r=doggy22
WepClix

€0.01 per click
€0.005 per referral click
€2 minimum for cashout
4 ads daily
link to join - http://www.wepclix.com/?ref=doggy22
so far they have little or no problems, and no investment is required for standard members to request for cashout, so it should be safe to join. just click the links above (or the banners) to be redirected to the site webpage and register yourselves there =D