Search:

New auto tune carbs on stihls are shit
Stihl for torque husky for revs
Stihl head/barrel design is shit if you have to fix, husky is easy just a barrel
I have 2 old huskys one 20in the other...

The cheap stuff will let you down if It’s worked hard,general wood cleaning/trimming will be fine
Hard firewood work will kill them, mostly oil pumps can’t handle it then trying to buy bits is next...