the best brands is really not the question to be asking, as ALL good Brands these days make CHEAP JUNKY models and then they make more higher grade model saws
so the question to be asked , if you wanted to find the BETTER SAW for YOU!~
would be to tell us what all you need a saw for? HOW much will you use it, and on how large of tree's
and what your skill sets are wiwtha saw !
as TOO big a saw for a new person can lead to getting hurt
That said, the three brands I consider worth buying are Echo, Husqvarna and Stihl
one advantage I have found using many NEWER (last 10 yrs) of , Echo branded saws is they have MUCH longer warranty's (5 yrs, as to most other 2 yr)
and they have been holding up very well for MILD use!!
If your going to be using a LOT< then you really should invest in a PRO grade saw, they cost more for a reason!
if you only plan to cut a few things and never use again
many times a cheap throw away model will get the job done , but know it going in, that they are NOT great saw's and won't hold up all that great 99% of the time! and why there as cheap as they are!