For what it's worth ........
Just flew the VMAR Tomahawk.
Using a Thunder Tiger 54 4C with 11x6 prop. with a 4400 m.a. nicad up front for the on board glo. gave a c. of g. 2.56 " back from the l.e. (as specified.) Had to 'ease' a few gaps as some of the hinges were glued in with very little clearance (restricting control surface throw)
I know the 'box lid' says larger engines are recommended, but the Airsail kit version is the same scale and they suggest the T.T. 54 4C, claiming scale speeds at half throttle.
Well, the 54 4C was adequate, the ground roll was maybe 30 yards before the elevators were really effective, (they're not in the prop wash)
Initially a bit 'touchy' in pitch, 30 % expo settled it down nicely.
Rate of roll just nice with the recommended throws. As the nose gear is not that far ahead of the mains, I drilled another hole in the servo arm to reduce the travel and the ground handling was quite o.k.
looks nice and flies well, the flaps had very little balloon effect, the approach and landing easily controlled.
I know more than a few people don't like VMAR, but I've also had no trouble with their PC-9, still looks good after maybe 50 flights.
They are cheaper than a lot of the other ARF's imported into Australia, (the Tomahawk is AUD$299 (about 160 US$ ?)
Sorry, tried to send a pic, but the file size must be too big.