I have only had three genuine Cubans and two that were questionable. I do have to say that the Cohiba Siglo V that I smoked was the best cigar I have ever had. If Cubans were available and affordable, I would try to smoke them all the time.
The interesting thing about the embargo is that it has led to a great flowering of non-Cuban cigars. The high end Honduran, Dominican, etc., cigars that I have smoked come very close to the level of a cuban at a fraction of the price (although you can spend as much on a non cuban as a Cuban)
Anyway, I know that someday, when the embargo is lifted, I am going to smoke a lot of Cubans, but I will still be interested in what the non-cuban world has to offer.