Nice collection for sure! I had a 920 with a 28" bar on it that I bought at a yard sale for $25 because it didn't run. Carburetor kit and a tune up and it ran great. Flipped it for a nice profit and bought a 630 super with a 24" bar for $75 because the guy needed money. I still have that saw and use it every now and then.
I hear you with the parts saws. I have many Husqvarna, Pioneer and Partner saws kicking around. Some of them I had to hide real good because the wife told me to throw them out, so I just found a better spot to put them....LOL