A.R.
We use Wallace Farms. They have excellent tasting meat and very high standards. We have had no problems with any of the meat we have bought there, as far as taste or quality. There is no CSA to join or fees, they sell frozen meat at drop-off locations in the area (you order ahead of time and bring a check) on Saturdays, and they just built a warehouse in Naperville so they will have more routine pick-ups.
There is a little store at Heritage Prairie Market just outside of Aurora that sells some select meats in their freezer from surrounding farms. They usually have pork ribs, some lamb, etc. (We love their honey and will sometimes pick up a little meat when we are in for that.)
There are several more options in the area that are CSAs, like MooGrass Farms, which also sells raw pastured milk and butter. I have not used them myself, so not sure about price comparison/quality.
Try www.eatwild.com for more information on local farms, and
the middle column of the page here:
http://www.foundationforrealnutrition.org/
M.
(My food blog: www.chickiepea.wordpress.com)