Martin,

I have flown with this instrument, it works well. It will tumble after
several minutes of extreme bank angles. Even higher priced instrument
in the $3000 to $5000 range have a cage function for acrobatic
maneuvers or extreme bank angles.

Please see my web site for more info and pricing
http://www.craggyaero.com/solidstate.htm

Richard
www.craggyaero.com