If you described what kind of wood, and diameter you are cutting, I missed it.
Depending on what you are cutting a 50cc class saw sounds like a good addition to your collection.
If you want a New saw a 550XP would probably serve you well, in a used saw a 346XP, or Husqvarna's "Forgotten Saw" the 353 would be Excellent Choices IMO.
I grab the 353 a LOT for soft woods up to 18", mine has been very reliable, the only "Known Issue" is the already mentioned Plastic Carburetor Boot Clamp, swap that out for a metal one, and you should be good to go
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In the 60cc class, a 562XP would be worth looking at, AS member Skeans is a Professional Faller, and he uses, and speaks very Highly of the 562XP, He uses up to a 32" bar, falling mostly Softwoods. He makes a Living with saws, and his is an Opinion I Value. A 562XP and 372XP are on my add list, but with "Nonessential Businesses" being closed by government order right now, my Wife is out of work, so any new saw purchases are being put on hold for the time being
Doug