I guess I'll be the voice of dissension here. I really don't think fermenting in a plastic vessel with a plastic spigot is a great idea. I personally wouldn't trust the flimsy plastic spigots to be watertight for weeks at a time, nor would I trust them not to introduce an infection, if they weren't completely watertight. A leak during bottling is no big deal at all, since it doesn't take very long, and a big leak wouldn't be left alone to drain the bucket on the floor. A leak during fermentation could be a real mess, and the only real fix is to then transfer to another fermenter.
I just think that having a spigot to drain the beer is really a very small reward, when a siphon works quite well.
Though, maybe I'm just being overcautious...