Initially (until the mid 90's, I think) they were spread between different markets: every european country had his favorites; the only place that had them all was France, and maybe Spain.
Online sales have put an end to this repartition, as the grey market vendors get their stock from everywhere…
As for a rating: I've smoked all of them and came to the conclusion that it depends on the batch: sometimes the Mille Fleur is the best, the year after it's the Super Partagas, etc.
If price is not an issue you should stick to the Short which is always one step above in terms of taste.