I voted for FORD! Just kidding.

O.S. and Saito are very good but a little more on the expensive side than they should be. JMHO I have one Evolution .61NX, One Evolution .46NX and one Evolution .46 NT and they work great and the prices were right in my book.
2 people in my club love Magnum Engines 2 and 4 strokes...and I haven't seen them have any problems. If Evolution wasn't around I'd be buying Magnum's. Can't beat the price for what you get.