I have the 30L speidel and absolutely love it. So far I have done 4 beers in it, and the only one that needed a blow off tube was the 10% belgian tripel. Even then I only got a little running down the side. The head space coupled with the huge airlock really makes things easy. I noticed on mine that the spigot pickup is offset from the center of it's mounting cap which means I can rotate it so that it picks up beer from higher up in the fermentor, so that I get clear beer into the keg. I don't have any issues with getting yeast or trub into the keg.