I have the older version 570, no complaints hasn't bogged down on me yet. the blade brake is terrific, no need to wait for the saw to spin down anymore. Change out the blade, I use a diablo and its faster and cleaner cutting then the stock blade. They make a dust collector accessory for the saw it fits into that slot at the rear of the guard, that is a must have. I hooked it up to my shop vac and it really helps to keep the dust down.