I have no idea if there's a difference in taste between rabbits but I like argentes so far. I have both champagne and creme d'argent. They also make interesting pelts. They can be a bit harder to find and more expensive though but you can sell extra kits for a good price. The person I got my champagnes from much preferred them over new zealands. If you want something smaller Dutch are apparently good small meat rabbits.
This is impossible. Domestic rabbits are a totally different species from the North American wild rabbits; they cannot interbreed. San Juans and Missouri Cottontails are 100% Oryctolagus cuniculus, the European rabbit that has been domesticated.