Now, I prefer 4-strokes in almost all motor applications: autos, lawnmowers, outboards, etc. They are quieter, produce less smoke, and have better gas mileage for the most part. But, 2-strokers do have certain advantages: lighter weight and back-up rope-starting, for example.
As I watch the snowmachine industry follow the others and eliminate almost all 2-stroke motors from their line-ups, I start to wonder if maybe I should buy one, before they're all gone? And the few 550 & 570 fan-cooled models that remain, tend to be in the no-frills budget sleds, which make them seem like no-brainer bargains. But, maybe that's just nostalgia talking, and the new 4-strokes are really better in the long run?
Or is the E-Tec the answer to all my questions?
PS - If they ever start phasing out 2-stroke chain saws, I'm gonna buy a few of the last ones!