After reading some of the 064 threads recently, I decided to do a crude comparison with my 064 and 460. We'll start with power. The 064 certainly has more grunt. In small wood, I don't think you'd notice the difference. In bigger wood,(20" plus) the 064 really shines. It has noticeably more power in the cut. I wieghed the power heads on my hanging scale. The 460 was appx 1/2 full of fuel and oil. It came in at 16 lbs even. The 064 was near full of fuel and oil. It came in at 17.5 lbs. I'm going to say with fuel differences, the 064 is about 1 lb heavier. In my hands, I really can't tell the wieght difference. The ergonomics are about the same. I realize this is a crude comparison and they are both great saws. If I had to choose one, it would be the 064.