I can see the appeal of the cheaper chinga copies, I was temped once, but after watching the build threads on several forums, the general theme was most of the saw was replaced with original stihl/ husky parts to make it work.
better off getting a basket case original saw, and rebuilding it, and often cheaper too.
Many toasted big end crank bearings, failed decomps taking out the slug and jug, many carbs that wont hold a tune, or wont idle etc.
its a total lottery, some just run and run, but most have many issues, many failed starter recoils, the list just goes on and on.
personally, I am glad I just stuck with OEM stuff, buy once, pay once, cry once, but enjoy the cost vs price over time.
I dont want to second guess a saw when im half way thru a back cut, or have one fail when im out collecting firewood, wasting a day due to a failed saw.
up to you in the end, but I chose not to go that way, just too much drama and unknown, as mentioned earlier, get a cheap basket case and rebuild it if your interested in tinkering with saws, you will learn a lot and have invested into something that will last for many years if you diagnose, repair it correctly.
edited for typos