Low speed color print - Kodak Gold 100
Walgreen's 200 speed is now Fuji (used to be Agfa).
Medium Speed color print - Fuji (from a pure price stand point. Kodak UC professional is the best in 400 but it's a little higher priced. Try to stock up if you catch a sale on it...)
Black and white -
In addition to those mentioned, you might try Ultrafine brand from Photowarehouse, which is rebadged Ilford FP4+ at $2.19 a roll of 36 (a beautiful film, love it in Rodinal or at ISO 200 in Diafine)
Check it out here:
http://www.ultrafineonline.com/ulbwfiiso125.html
400 ISO here I
think is Ilford Delta, another fine film at $2.39 a roll of 36.
http://www.ultrafineonline.com/ulbwfiiso400.html
Another consideration, which is what I do, is by 50' or 100' rolls of film, load it into a loader which are cheap and commonly available on eBay, and roll your own onto spent cartridges given to you for free at your local photo store (some don't give them away as they recycle them, others are glad to give them to you...)
I have 100' of Agfa Optima 400 color, 100' of Tri-X, and 50' of FP4+, and 50' of XP2 Super loaded into bulk loaders in the fridge. I'm fixed for film for a while, comes out to about $1.50 a roll, guessing.