A:AnswerThe specs for the P400 state that you can print on media/paper up to 1.3mm thick. 110 cardstock measures 0.216mm in thickness, so you're O.K. with that thickness on this printer. The P400 is designed to take fine art papers and other media up to 1.3mm thick with a surface that is inkjet printable. To use thicker papers (such as 110 index cardstock), you must load the paper from the rear slot, feeding the paper in a straight path and avoiding the curled path used when the paper is loaded from the top paper feeder.
A:AnswerI purchased an Epson a few years ago and was very disappointed especially a few years before that, they were one of the best printers around. Not anymore. I buy Brother printers. Been around for decades and they so far have lived up to their quality standards.