I have only used this a couple of times as of yet,I first ran some really rough oak through it,next was some walnut and I am really impressed with how well it planes in both instances. I really can't tell any real difference between the quality of cut using the slower( more cuts per min.) speed rather than the faster one. Really like this machine!Perhaps even more stars are to be rewarded for their prompt customer service. The unit arrived with a broken gear case cover. Going to their web site gave me the part number and a short email explaning the damage in transit resulted in receiving the replacement in just a few days. There may just be a place for some other yellow tools in my shop as a result.I have read of problems with the blades wearing too fast, and I guess time will only tell there.