Given that snow is yet a little bit sparse for snowboarding and the weather could be improved on I have made myself a late christmas present:
It is a rather sporty rodel (Torggler TS 120 Tourenrodel Spezial 2014/15, 9kg weight, with fast (non stainless) "racing rails" and 22° angle of the runners) but not a competition model. I wish I had bought this years ago. It is a lot more comfortable than a classic sled ("Davoser Schlitten"), since one is sitting in instead of on top of the sled somehow like in a hammock. Being able to steer without putting a foot into the snow has the nice side effect that the snow stays on the ground instead of ending up in my face. Obviously it is also faster which is a huge improvement even for recreational riding, since it makes the difference between riding the sledge or pulling it on flattish stretches. Strongly recommended.
FWIW I ordered this via rodelfuehrer.de (they started with a guidebook of luge tracks, which translates to "Rodelführer"), where I would happily order again.