Have to clear up the Arresti weight issue. The NEWEST one is at 183.9 oz., over 5 kg. With CF gear, pants, and pipe, and changing my heavy battery to a lighter one, it will be 173.5oz, well under 5kg. MANY current state-of-the-art F3A designs sport all the SAME "CF" needs, and still come in at the same "nearly 5kg" weight limits.

Not pushing, just clarifying....data is on my website.
[link=http://www.rcaerobats.net/Arresti/arresti_iii_weights.htm]Arresti Weights[/link]