My boxing is by Mikro 72 but it can also be found as ZTS or Plastyk. I think this kit is the only one around in 1/72.
It is an okay kit, like Airfix or Heller, raised panel lines, fabric effect (I tried to subdue that with a coat of Gunze Mr Surfacer), minor flash, fit was suprisingly good, not much interior detail but enough.
Mikro 72/ZTS/Plastyk has some nice kits, like this one and their RWD-8 but also bad kits like their LWS Capla and some of their glider kits.
I have finished the RWD 5bis. The masking came of great, just a few touch ups. There where just some minor details (wheels, gear etc) to paint.
I also polished the engine cover with grafite powder. This plane was a aircraft with doped aluminium fabric. The engine cover was metal so the shine was different then the rest of the plane. This is visible in several photo’s of the aircraft.
It is an easy method and the results in nice. Unfortunatly, it is not that visible in the pics but it is better the the unmodified parts (that is, no engine facing at all).