Given the description that you have given us, the answer is either.
In other words you haven't given us enough information to give a decent answer. Please describe what kind of queries you expect to perform on the data.
[Having said that, I think the answer is going to be the first one ;-)As I imaging even though they are different models, the data for each model is probably going to be quite similar.
But this is a complete guess at the moment.]
Edit:Given your updated edit, I'd say the first one definitely. As they have all the same data then they should go into the same table.
