First good reason I've seen to head back into the office 1 day a week, to load up the office Xerox with card stock.

I have a Brother laser printer that I got back in 2009-10 or something. It's never had a problem with cardstock, though I guess I've never thought about it. What problems do printers have with cardstock?

OKI 3x2dn (the x in there essentially means the amount of paper trays). We had run thousands of A4 pages of cardstock through the thing printing atendee badges for our convention.

I have an hp 2055. alot crappier build than the LJ4+ it replaced

but aside from adding a little curl, its never had a problem with 0.02" card stock (what is that 125lbs? yes, stupid old units)

My wife broke the paper feeder on a HP deskjet while trying to print on a heavier photo paper and the OfficeJet failed even loading it.