After reading many similar list here is a general list of top recommended saws by size.
45cc dolmar/Makita420, Stihl 241
50cc husky 346, Stihl 261
60cc dolmar/Makita 6100, husky 357, Stihl 361
70cc dolmar/Makita 7900, husky 372, sthil 046/460/461
90cc husky 395