I had one, threw it away for the reasons Gnick states.
IMO - it doesn't do anything well, just fast and messy. Sorry if I am being contrarian.
And yeah - oil sticks to the damn plant material. Busted trichomes get everywhere on everything. Not sure what is hard to understand about that. The first several ounces are OK, but by the time you get to a pound the thing is completely useless.