These look very nice......but I'll wait for some kind of track record to be posted before seriously considering acquiring one. I've never fermented in anything but plastic buckets, and think they're as good as anything out there. I did move to a somewhat larger bucket, due to the tendency to get foamouts from the airlock with some beers (the U.S. Plastics 7 gal. bucket). When I made that move, I bought three buckets with different colored lids (lids on the U.S. Plastic buckets have a REAL neoprene 'O'-ring seal), and had the lids drilled and grommets installed in about half an hour. Cost= $32 delivered for the 3 buckets and 50 cents apiece for the grommets. Hard to justify $45 when buckets can be had that cheaply.
Now for the big positive for the Speidels, which is the spigot (my buckets already have enough headspace, and the smaller airlock is adequate, at least for my beers). I know a guy who ferments in nothing but buckets with spigots. He's also made a bunch of wooden wedges that tilt the buckets back about 10-15 degrees, so that the trub slopes away from the spigot, making racking a complete no-brainer.
As has already been alluded to in this thread, the big problem with the spigot normally installed on bottling buckets is that it tends to be not completely liquid-tight. The spigot itself is only $3-4, but absent a solution for the leakage problem, I have stayed away from that type of configuration as a fermenter, sticking with my good 'ol Fermtech autosiphon. But there is no denying that there is always some risk of infection when using that time-honored method. The Speidels seems slicker, and I'll reserve judgement until some sort of specific experiences are posted here on HBT.