Mendes vs. Lamas wasn't a bad card at all. All of the fights on the main card were good except Guida's fight was sub-par (so good for a Guida fight, he's been very boring recently). A few impressive performances, and a couple of good, close fights. Nothing spectacular, but I'd go back and watch if you can.
The prelims, on the other hand were skippable. I'd recommend the heavyweight clash just for the laughs.