RE: Junk plane to test gas engines with
Definitley the Stick.
Just brought the Giant Big Stick as a test bed for my 1.20 size engines upwards.
Have had an RCV 1.30 and YS 1.40 in there to test, and now have an ancient OS 1.20 fs in it.
It has a ton of lead in the nose, but boy does she fly well.
So much fun with it, will do every manoeuvere in the book, and as with the YS, every flight ended in dead stick, she just floats forever at walking pace untill touch down.
The standard big stick will be perect for you.
Darryl