That link is to the slope forum, you can get tons of info there about flying wings.
There are lots of choices.
The weasle is a favorite among many but the shop is closed currently. www.dream-flight.com
There is the "bee line" from windrider http://www.rcgroups.com/forums/showthread.php?t=859034
canuck has cool stuff http://www.canuckengineering.com/sto...4fefdccf145c1e
The halfpipe http://www.northcountyflyingmachines.com/aircraft.htm
has a variety of slope wings. You have to contact Chris Klique directly and he will set ya up with what you need.
There are just so many choices and we need to know what kinda performance you are after.