OK, so i've gotten a lot of good information from several of you on blade sharpening, and blade sharpeners. In the last thread on the subject, the advice seemed to lean toward "bigger is better" with regards to blade sharpeners, or more specifically, the size of the motor on the blade sharpener. As to brand, Magna-Matic seems to get the nod for a top-of-the-line unit. So, I check out the Magna-Matic website once again, and guess what? Their 8000 blade sharpener, which handles all standard blades (I never use mulching blades), is powered by a, you guessed it, 1/2 horsepower motor. So, why is it that the Magna-Matic with a 1/2 horse motor is top-of-the-line, while an Oregon or other brand in 1/2 horse is underpowered? I'm confused.