There's alot of these motorgliders for sale at the mo.. just after the
pro's/con's of the motors.

Don't have any of them myself... but I hear as much praise about the
26's setup as I've heard about problems with the rest. Speaking from
an anecdotal standpoint, the 26's Wankel arrangement seems superior.
Of course the electric option seems a superior choice to the Wankel,
and would certainly be my first choice if it were an option...

-Paul