RE: Sebart Wind S Pro
To be completely honest, Volkert, I wouldn't buy the WindS pro 2m. If you can afford it, the MTL Gaudius is a better choice, so is the Krill Spark Dynamic/Evo (Roy has a brand new Spark Evo for sale!).
After a year of flying with the WindS, I still have mixxed feelings about it. It all depends on what you want to do with it, but for P13, the WindS is, compared to other planes, a handicap. Before everyone here starts biting my head off; I love my WindS and even tho my earlier critisism, I do think it's a beautifull plane, but it's also a handfull, compared to some others. It's roll stability isn't great, neither is it's direction stability, it's a plane that needs constant care when flying it. This instability makes it great for difficult integrated manouvres, but for 'just flying a straing line', it's lesser suited. The P programmes are a lot of straight lines. The WindS 110 is actually better in that, than the WindS 140.
If you do decide to buy a WindS pro, don't worry about weight. Mine weighs 4600 grams, and this is too light. Also don't buy this plane if you like a 'slow speed' flying style, because of it's instability it's unsuited for this style, it has a thin profile, thin stabs (probably also the reason why Seba thickened those on the CFG wing/stabs), it needs some speed.
Build it at at least 4800 grams, probably the closer you get it to 5kg, the better. Power it with something (prop) which gives it enough speed, and then be prepared to really fly it, be on it's back all through the flight.
I must also note that I fly it without wingfences or canalizer, next season I will be testing fences, I think this might solve some of the instability of the plane.