French rations are pretty good actually. I have had them twice, in Ploce, Croatia in 1995 and The Democratic Republic of Congo in 2003.
I thought they were good, the main meals come in two sardine type tins with a ring pull, they fit nicely into a mess tin with space left over.
A good beverage pack, soup is the best ration soup I've tried, and the coffee is awesome. I still have a few sachets left, I grabbed loads before I left! It also comes with a small Hexi cooker, which comprises a small sheet of metal that you bend to form the pot standoff, and small werthers size fuel tablets that last just as long as a brit hexi block.
There is a big pack of biscuits which look like rich tea, but they are salty, and a few are sweet and are impregnated with chocolate, which are not bad. Obviously, the meals are a bit more continental in their makeup, but they are nice and were a nice change from brit compo.
As to a source, I have no idea. I'll keep an eye out, if you find them give me a shout!