4 cycle string trimmers?

[84-250]

I've had a few 2 stroke trimmers. They were major Pains In The Arse. Hard to start, hard to keep running, and hard to keep tuned correctly. Mixing gas / oil was a hassle. if its hard to start/keep running/keep tuned, you have a piece of (cant say on a family site). my stihl starts up in two pulls after a winter, i also drain the tank and run the lines dry before storage too. A good commercial grade trimmer is tighter in emissions/engine tolerances than your average consumer grade crap, there is no smoke coming from my exhaust.

[33PPP]

Some good responses to this thread. I for one was also wondering about the 4 cycle trimmers. I know you can operate a 2 cycle in about any position, but now that they offer the interchangable attachments I wonder how well the engine is lubricated when it is operated upside down? With the 2 cycle you can do anything with it and not worry about starving it of oil/lubrication. Do they have some sort of pressurized system to get around this?