Plus one for the Bahco Laplander.

I find this style of saw a bit more usable than the triangular sven type saws because you can get the blade into some tight spots to cut branches. There is no fiddly setup or bits to drop. Its compact and cuts quickly.

Best suited for hard wood up to about 12cm or 4 inches I think, maybe a bit bigger if you have a softwood. Perfect for firewood and most jobs