We used the "regular" canned meats that we could get in local grocery stores along the way in Mexico
and Central America
. Most US groceries carry a wide range too (I know Wal-mart does). We never bought Brinkman's because of the cost and the cans are just too large for two people.
The cans I'm talking about are roughly the same size as tuna cans and are in the same area of the store. Ham, crab, roast beef, clams, chicken -- all sorts of good stuff. We've lived on it for two and three months at a time.
It took a while for me to get the hang of cooking
with canned meat and not making mush of it. I put a bunch of tips on my blog and I'll just post a link instead of copying it all here:
Using Canned Meats
There's also a list there of all the meats and seafood I found in cans (and some in pouches).