As for my Synergy 90, I had the conversation with malc last week and i told him i did not like the plane. Could not put my finger on it but i did not feel comfortable in the F3A style flying although i thought the outright 3D performance was quite good (although fast)

I also had an email conversation with mike williams on the subject. (he likes his one)

it appears to fly OK upright and inverted but feels "tail heavy" when its on its side IE VERY pitch sensitive to rudder making point and slow rolls untidy. the cg feels fine in upright flight (my CG is 243mm from trailing edge which is quite conservative)

I am just looking forward to getting my Capishe 140 (malc should have it finished in a couple of weeks) and if ready in time me and Ali will probably share the use of it for the 3style comp. i have got to say that after flying the synergy the Capishe is streets better.