I've been a part of the program for about a year now I guess and I've never been disappointed. Yes, occasionally you might get something that is already close to expire but that happens when you are dealing with food. The site I go to does a really good job of looking out for foods they think are too old and have rejected deliveries because of it.
Some weeks you'll receive the basics and other weeks you'll get some food you've never eaten before and it becomes a new experience to try something new. You really can't beat the price either; $15 for a regular basket and the multi-grain bread you can also purchase is excellent. If you have some friends you can buy a seasonal fruit of veggie in bulk and share the cost and bounty with them.
Since each site is run by volunteers; don't take it to heart if you happen to come across one that isn't that organized - they are just regular people doing their best to help others... maybe you should step in to help.
I also found that I eat a lot more healthy when I get the basket - you don't want anything to go bad so you eat more of the good stuff. I would recommend that everyone give them a try at least once or twice.