I had a sharp stone grinder that was great for a low/mid priced grinder, have a spacecase, and a mendo mulcher. The Spacecase is by far the best and smoothest grinder I have used. It collects kief very well and grinds to the perfect consistancy.
The mendo mulcher is cool, I really bought it because it looked sweet and it is made in the USA, but the action is rough, and the grind a bit too fine for me. It is well made, but really needs the phenalic spacer that the sharp stone and spacecase have to smooth it out. I never use this one anymore.
Best value was the sharpstone, collects great, grinds great and I got a hash press with it in a package deal off ebay for about $30 or so. The press works great too. It is pretty much a spacecase knock off.
For my keif collecting needs at harvest, I got a 20x24" framed silk screen from pocono silk screen(around $30) which I lay over a 20x24" mirror. When I trim, I cure all the trim then I crumble everything over the silk screen and give it a nice few rubs back and forth over the screen, 8 plants worth of trim run like this is a beautiful thing. When I lift the screen off the mirror, the glass has a nice layer of blond dust which I scrape up with a razor blade and stuff into the press, a little heat and a few turns on the press , cool in the freezer and bamm!! Out comes a nice hunk of killer gonja essence.