Alright I ran almost a tank through it today in a log pile cutting up some poplar that was seasoned out pretty good and some cherry. It ran great. I'm real impressed with the power of it. The 576 felt like a toy after using it for a few minutes.
Just out of curiosity what was the 655 rated at hp wise? Acres doesn't list it.
Check out the Pioneer P65. If it's not listed, should be just a little higher than the P62.