I personally really dont like them, the engine is a chinese made briggs, and have a habit of blowing the conrod out through the fuel tank on a space mission, the mower itself is very similar to a similar era GMC mower, infact the base is the same but blue and they use a different catcher and catcher flap.
Personally I have never really liked bag catchers, I think its personal preference though, with a hard plastic catcher I usually beat it on the ute when emptying it to make sure everything is out, where I have struggled to empty a bag catcher without it trying to fold inhalf on itself.
As for the blades, an old rover cutting disc with 18" blades, boss, bolts and key will fit perfectly - been there dealt with that
