I have been looking for an upgrade to my O26. Thought around the 70cc mark. I like the 440 and 460 s but they are still crazy priced around me and look to be worn the heck out. Cant do the 1300 or whatever for a new one. BUT I found a guy that builds nothing but clones with all new aftermarket parts. I can pick up one of these for around 700. He has a 441 up right now and said he is going to start on a 660 soon which will cost about the same , for some reason he said the 441 was just as much to build as the 660. What do you think? I just like the idea of a new saw and the bigger cc.