I really dig parked.com, customization of title, meta tags and can provide your own link back to your own email address or site so all domain deals end up in your own hands, they do not allow gambling, adult or trademark domains so leave those at namedrive or sedo, they do not have .mobi templates yet so if you have any of those leave those at namedrive or sedo as well, uses yahoo ads which have shown me the most revenue and they also pay for multiple clicks, I have seen 1 user click 12 times before in my stats, overall parked.com is my favorite currently and I have 179 domains with them and the rest that parked.com won't accept or don't do well scattered around at a few other providers sedo, namedrive, trafficclub, etc... I have also made a few suggestions to my account rep for improvements with their program who has passed along this info and the changes were made, so I gotta love a program that listens to suggestions from their partners. Your best bet would be to park all of your domains at sedo, namedrive, parked, trafficclub, etc... for a month each and then see where each domain name generates the most income for you as generally 1 program is not the best for all of your domains and testing is the only way to achieve maximum income from your entire portfolio.