I've got two of the 30L fermenters and really like them. The spigot works great and seems to be at the perfect level for leaving yeast behind. Then again, I mostly do 3 gallon batches but haven't had an issue with any of my 5 gallon ones.
Keith, here's a like a saw a while back about a stainless valve and rotating racking arm:http://www.homebrewtalk.com/f11/speidel-fermentors-now-stainless-rotating-racking-arm-449546/
So far, I haven't had any sanitary issues with the spigot. The parts on them are larger than those on a bucket, however, it doesn't come completely apart so you have to be careful when cleaning them so you don't leave anything behind.
If you got a second spigot and put that on top, you could possibly us CO2 to push the beer out into the keg. I've seen where people have done so and the fermenter had no problem holding 5psi, just haven't tried to do it myself yet.