ORIGINAL: freestyln
Although keeping in mind, the results and oppinions given are based on the budget people have to be able to afford a particular engine/brand to start with. Thanks everyone, keep posting! James.
I fly with three of the four-stroke brands listed, OS, Saito, and Magnum, and one not listed, ASP. I purchased all the engines used, most already installled in a model, so I have no experience with the break-in requirements of any. THE OS and Saito are more powerful (for their displaement). All start easily, idle well and run reliably within their power/prop ranges.
IMHO, one should consider the model's power requirements and the engine's power/weight ratio, as well as the cost factor when selecting any engine.