Bought a Grex at the Greensboro expo last spring. It's a nice tool: light weight, will shoot into white oak w/o problems every time. Longest pins I have is 1-5/8, but it will do 2" pins. Also, he grex does not need any adjustment when loading different lenght pins. Yes, it is a bit more than most, but it has never misfired, jammed ; every pins was set properly. I figure over a 3 months time I spend more money on buying a cup of coffee on my way to work than what I spent on the pinner.
Cheers,
Bernhard