For blogs it depends if your traffic converts well. If its lot of SE, then you can just choose do revshare or PPS , if its mainly traffic from trades go for Blacklabelads, etology, AAW.
Since you are not doing much traffic trades or offering much real free content beside those that sponsers hand out. You might wanne check skinvideo and IMLIVE
Skinvideo
IMLIVE
If they however convert bad on your site, since it could be that your traffic trades send in a lot of traffic thats hard to convert you should try out AAW, they pay per impression.
AAW