if you cut a lot, don't be cheap, buy a GOOD professional grade saw, period!
they will last a LOT longer than any discounted models, by design, there service stats prove this! in hours of run time before rebuilds are needed!
and be honest with yourself on what type of wood you will be cutting and size of things
if 90% of your cutting is on smaller sized tree's you DON"T need a huge saw
but if you cut a lot of big tree's
again, don;t be cheap, buy enough HP to cut without working the heck out of the saw!
to me saws are like guns, a NO one size fits all deal, there are better tools for task's at hand
and good saws last a LONG time with good care
which brings me up to this
I would strongly suggest if you liked your OLD saw, to take it else where, and ask what it would cost to have rebuilt
2 stroke motors by design are made to be rebuilt and most times NOT that costly to do so!, nor hard, if your willing to do so yourself!
there pretty simple things to be honest, or the older one's are, some of the new ones with high tech carbs and starting systems and or worse yet 4 stroke models LOL
are another demon!
but simple 2 stroke chainsaws, are again designed to be rebuilt!
and all the GOOD old reliable models, have parts still, and can find even donor parts if ended if you look online!
craigslist, ebay, facebook market place and so on!, or chainsaw forums too, if needing a special part for a saw!
big players are as always, husqvarna and stihl
and BOTH have a professional grade and a consumer grade and some even have the cheaper chain store versions as well!
again, you will get what you pay for!
I don;t know all you cut to suggest a model here, but look at HP and again be honest on what you cut, and pick a model on the pro side fitting to your needs,
use GOOD oil in fuel and mixed right and will last a LONG time!