My mechanic says they are loosing money on 4 strokes after the warranty runs out. People don't want to spend the repair costs on the 4 strokes and they are to difficult to work on on there own. Their shop had to spend a quarter million on speciality tools to service the new engines. Home mechanics can't afford that. If you can afford a new engine they are great as long as the warranty stays going, and most buyers are convinced to buy the extended warranty plans because of repair costs after warrant expires. Hey, to each his own, if you can afford a new one go for it. Even though I could afford one, just can't justify the expense to myself.