Chris, i've flown a 30% on a ZG 62 (belongs to Richard Gale) and it was fine. Plenty of power. Also, Paul Carr does unlimited 3d with his, again using the Zenoah. He said more power would be nice, but the 62 is enough, bear in mind that the ZG 62 gives unlimited vertical performance to models in excess of 20lb, and the 30% cap can be as low as 16lb.
The Fuji would be great. Remember that a pipe on these size motors has significant power increase.
Krumscheid silencers are available from
www.moki.co.uk .
Or if you waited, Glen is releasing a 35% Extra soon!