Hi

Let me put it this way (I have own/own SM, FEJ and Feibao. Also built Jetlegend). My personnal opinion:

Glass lay-up 1ºSM, 2ºFeibao, 3ºFEJ, 4ºJL (very thin layup anf gelcoat - very light but very fragile and gel coat cracks a lot)
Epoxy resin 1ºFeibao 2ºSM 3ºFEJ 4ºJL
Paint Quality 1ºFEJ 2ºSM 3ºFeibao 4ºJL (O guess now JL already as external paint - but never saw)
Paint scheme detail 1ºSM 2ºFEJ 3Feibao 4ºJL
Gear train 1ºSM 2ºJL 3ºFEJ 4ºFeibao
Tail pipe 1ºSM FB and JL 2º FEJ
Valves 1ºSM 2ºJL Feibao and FEJ are junk
Cilinders 1ºFeibao 2ºSM and JL FEJ is trash
Cockpits 1ºSM and Feibao JL and FEJ are crap
Price/quality 1ºFEJ 2ºFeibao 3ºSM 4ºJL

All gave me great fun as long as you work hard to solve the faults, but the most annoying are

FEJ leaking cilinders and crappy valves
JL cracks in the coat
Sloppy Feibao gear
SM is quite expensive in comparison

I used to say it is almost as hard to chose a jet as it is to land it

Good luck and hope it helps

Nuno