I need a better bench grinder - my old Craftsman unit bogs under the slightest load and vibrates more than grinds. My use is mostly for general tool sharpening, and some materials shaping. I like the idea of larger, fatter wheels so I'm looking at 8 inch units. I've come down to these two: Northern Tool - http://www.northerntool.com/shop/tools/product_17016_17016 Ryobi - http://www.cporyobi.com/factory-reconditioned-ryobi-zrbgh827-3-0-amp-8-in-bench-grinder/ryorzrbgh827,default,pd.html?start=4&cgid=ryobi-grinders Home Depot sells the Ryobi (in store only) for $65, the NT is currently on sale for $50 w/ free shipping. NT plusses: more powerful motor, less costly. Minuses: non adjustable tool rests Ryobi plusses: adjustable too rests. Minuses: less power, lots of plastic parts Any input or other suggestions would be welcome.