The SPAD Mini Pizza Box flyer looks ok too.  As well as the Gnat.  The Mini PBF looks a bit easier to make, might be hard to find the Canadian gutter pipe though.  Even here.  I have never flown either one though. The Super Slow Combat planes seem a bit refined for crashing all the time, but a few hours on the foam cutter could make a bunch of planes in a hurry. The coro seems better to me.  An AP .15 or ASP .12 or .15 is a good candidate for these planes and they are super cheap and work pretty good.  I am not sure about idling but the match is over and you cut the motor anyway.  It might stir up some competition especially if you bring a few planes to lend out to get people addicted.  Heck, the FAI combat guys bring 10 planes for an afternoon of fun.