My first Twin Star had OS 40-FP engines, my second had Thunder Tiger 36 engines and my third was a volter with AXI 2820-10 motors.

I recommend the T.T. 36 engines for glow, I've used them on 3 twins and in combat planes, never a complaint, Powmaster 15%.

For the "safest" twin I recommend going volter, no engine-outs.