I use efty for portfolio management, landing pages, analytics, and my portfolio site, although brandables aren't my primary focus.
I have recently done alot of cool things with my efty markeplace including integrating custom promotional videos for many of my featured domains. And a default for all my other domains
I have also chose rather than using the "landing pages", do have the domains all going to my marketplace landing pages. All of the traffic from 1250 domains all go to a page on my marketplace which is branded as nameperfect.com. Let your domains generate your traffic. You have a built in audience of domain buyers if someone is going to your domain to see if it is for sale.
http://nameperfect.com
and check out
http://exoticweddings.com
http://lowd.com
http://bankinganywhere.com
http://goldrefinery.com
http://beatbattle.com
http://ManShow.com