I would go to old orchard aquarium. Puts aquarium adventure to shame. They don't try to keep their plants healthy. No co2 system. Light system is crap. They get new shipments constantly BC they die off. Old orchard has co2 systems in their plant tanks. With actual grow lights. So much knowledge. They don't sell you useless stuff. Actually talked me out of a finex led light. Im staying with my 4 t5 bulbs. I make the trip. 45 mins away. Well worth it. Such healthy plants. You get what you pay for. Def recommend
I think that AA has a pretty good variety of plants; however, you do have to go within a few days of them getting new stuff in. After a few days, the plants do start looking a little ratty and the selection tends to get picked clean by the amount of traffic they get through the place. They do listen to requests for new stuff if you are looking for something specific, but plan on waiting a bit.
Their mosses tend to be a bit lacking though. I typically see Monoselenuim Tenerum, African water fern, Java moss, Christmas moss and weeping moss. About half of what you buy though is brown and nasty though as if it has been sitting there a while.
I know they have CO2 in their main display tank (in Hoffman - havent been to Bolingbrook location) but I am not sure about their tanks where the stuff you buy comes from.
Old Orchard was a different story. All their stuff looked great and their people really know their stuff including plant requirements for anything they have. They had a good variety of plants and mosses and lots of good driftwood pieces. they had just gotten a shipment when I went in and they took the time to bring it out and show it to me before they had a chance to stock them in the tanks.
If I am looking for something specific, I would think OOA would be the better choice but I live right next to AA and if I can time a visit pretty close to when they stock new stuff it works out for me.