I have a top and bottom 72" h2pro and I really like it. With the add on side box and locker it can end up being a good size box, especially for the price.
I use this for drawer liners, slightly sticky on the bottom and fabric top.
http://www.newpig.com/pig/US/absorbents-503/pig-universal-absorbent-mats-504/pig-grippy-absorbent-mat-8627/0/20