I had a 250. It was fine for homeowner type work.
I sold it to a homeowner and moved on to the 260/261 pro.
Best bar length for the 260 is 16".
If you want to go longer I'd step up to the 361...will carry an 18- 20" bar just fine
I've had my 361 for a while as well, nice saw. (I think they are...