Good price isn't what the purchase price is. It is the value per dollar. A 661-c ported cylinder empty muffler for a grand, was much better than a 661-c that was used by a logging outfit for 18 months for $550. Except, this motor head needed a good crankcase, for one of the builders to use for a stroker build. HLsupply had the 660 crankshaft on sale so that will be sent along with. 98.52 cc's once the machining & build is done.
Save the bit of money, be patient, the saw that will do what you want will show up. Hope you have saved enough when it does. 170# compression 046, $500 TradinPost buy when I was gonna dual power head a bar. I use either of the 70 cc saws up to 35" range of diameter. As has been said learn to sharpen and set up for the wood you are cutting, for the speed of feed that let's the motor run at a speed that let's the fan keep it cool.
Forgot Ms-460 was bought new w/25" bar for more than 661-c PHO. It is the ph in my avatar wearing a 60" bar running skip square chisel that allowed room for the chips to travel freely.
Enjoy safely