Depends on what you define as the best deal. GI mags can be bought cheap, but they've got a limited lifespan. There are better mags out there such as the Magpul PMag that you can buy for $14 each that will last forever. I've got about 40 GI mags, most upgraded with Magpul followers and baseplates, but I'm thinking about selling them all and spending the proceeds on PMags. In the long run it's a better deal.
