I am also trying to decide which drain to go with. I will first mention that I know nothing about drains but in the interest of being well informed here are DIY links to 2 other designs. Opinions welcome.
Stockman Aqua-Silencer Standpipe
http://home.nc.rr.com/stockmanreef/interest.htm
Hofer Gurgle Buster
http://mywebpages.comcast.net/domitron2/HGB/HGB.html