I like them a lot, but they seem to play second fiddle, quality-wise: I feel like I get more defective carts from them than other vendors, for example. Service is friendly and knowledgeable, but the past few times the cashiers seemed...over medicated, and messed up my small simple orders. The "basement" vibe isn't too great either.
These are my criticisms, but overall the place rules. I go there a lot.