Hey Comp ARF,
I might be able to help you soon! I have a CA 2.6 Yak also. Will be getting on a WH 40%er soon. The WH 260, Ultimate and 28% Extra have all flown as promised. The thing that I thought was cool was the person behind a large part of the design shown in that pic above.
So many good choices so little time
Oh yeah since you got the Yak, consider the fact that the WH has the midwing design. So its gona fly very clean with little coupling if any.
Factor that in as well. Hey you also forgot Dalton Aviation and Aerotech!!