I have 3 chinese saws.
25cc top handle, I bought this before you could get the joncutter one, its the same saw but not quite as good. I had to fix the fuel and oiler lines and replace the junk chain, since then its ran great.
61cc timberpro, it works fine as is and only needs a good chain, the kill switch broke after two years I had no other issues.
58cc joncutter, same deal as the timberpro, it works fine as is, it didnt come with a bar/chain so it got good ones from the start.
I modded the 58 and 61cc saws with 372 carbs, home made intakes and porting, they out cut 50cc pro saws now and still start super easy and never stall.
Since I dont run saws to make a living these are all I need and have also been reliable, they always start and cut when I need them to.