I'd like to second your opinion. I lurk these forums and have seen the mantra many times about Magnum and ASP engines being a "crap shoot" as far as quality. I have at this writing in my garage probably 50+ or these engines, 2 stroke and 4 stroke in displacements ranging from 0.10 to 1.80 . Most of these engines were bought used from the big auction site or RCG and RCU. I have yet to encounter one that did not run as well or better than the OS engines, both 2 and 4 stroke, that I have (probably 30+) I can only assume I am the luckiest guy on earth or the worlds greatest engine tuner (definitely not!!!). I would recommend these engines as well as the Tower Pro series engines (currently unavailable via retail) to anyone. I think my good fortune is due in part to using fuel with the appropriate nitro content for these engines. I have two OS engines with peeled cylinder liners which effectively make them parts donors. I have never had a liner problem with the asian engines I own.