Seemed there are many models available from the same manufacturer.
Our's over here from 'Ho Bao'(same as 'Ofna' over your side ?) has a stainless steel shell, compact, uses 2 sticks or 1 gel battery & does not cost a bomb like the Team Magic X5. It is strong enough even for new engine, if you use the 12V gel battery that can fits inside neatly.
Unfortunately, it also has the same problem of the drive belt slipping the minute it crank the flywheel. However, this minor problem is easily solved by placing an M4 flat washer on the left of the motor between the mounting plate to tilt the pulley a bit to the left.
Do 'IT', with a DUREX (safely) !!!