These large commercial cutter's can do many whole decks with just one cut and are more accurate than anything you can get yourself. [/QB]
That's not an entirely accurate statement.
High end card work (with a few specific exceptions)is done one card at a time.
A Porper, Owen, or even Line-Lo purpose built card trimmer will surpass a print shop paper chopper by a huge margin.
1/32" is considered a MASSIVE chunk of card for a number of quality gaffs, and there are some gaffs which offer work MUCH FINER than 1/64"!