I like the Innova 'Tour' bag. Good pockets, 2x bottle holders, good strap plus 4 mount points if you decide to add a quad strap. I got mine on Ebay for $50 total.
My birthday is coming up so I am asking for a real disc golf bag (currently I use an Ebonite bowling ball bag..lol) I want one that holds 10-15 discs, has pockets, a cup holder, a good strap, and one that is durable. Let me know which you think is good, and maybe which websites offer the best deals. Thanks