Big Aldi fan here. Their produce was better when i lived in Texas--closer to the source, I think--but it's still pretty decent here for most things that I use regularly--carrots, onions, cabbage, celery, and their peppers are always really nice and cheap at my location. Other stuff is generally good--I've noticed some improvement lately, so they may have a new supplier or something. Aldi is at least the same price in my area for meat, but I have figured out when they mark it down and have nabbed some great deals on things like pork tenderloin.Gonna have to call that one out. Aldi has pretty fantastic stuff at least here where I am.
I read a blog not too long ago where she did an experiment with food prices and found Aldi's prices to be 41% cheaper than the local supermarket (which is usually what Aldi advertises), and about 20% cheaper than Wal-mart. Great prices on processed foods and canned foods. I don't buy a lot of processed stuff, but I do buy "meal helpers" for my mom, like stuffed shells, things like that, and they are very good. Aldi also finally has whole wheat pasta, which made me happy to see--I wish they'd get a few more whole wheat bread choices, but I suspect it's coming.
I also like the fact that I don't have to wander around a bunch of stuff I'm not interested in--electronics, clothes--or have to choose between 47 brand of pretty much identical cereal or whatever. I do shop at the regular grocery, but I'm happy to pay that quarter to rent my cart.