I've been to Mario's a few times within the last year. The only item I've purchased from Mario's has been pork shoulders. Every time Mario's had the size (10-12 lb) of shoulders I was looking for, and the meat was acceptable. Pork shoulders seem to be pork shoulders, I've never had a great one, only bad ones & regular ones, and these weren't bad.
What made me visit Mario's was that the people I know from the area that swear by Mario's.
Overall I can say that the store was neat, orderly, and otherwise in the middle ground.