If I had only smoked the small sub-robusto sized Cubans that most folks buy - because they're cheaper than the good stuff, and they don't smoke cigars anyway but want to impress their friends - I would agree with you. However, I did smoke a Romeo & Julietta Churchill (gold label). Everything said about a good Cuban cigar is true. Nothing comes close.
I disagree. I have smoked many a Cuban cigar in my day, and have many in my humidor right now. Including the R&J you mentioned. I also have Cohibas, R&J Cedros Delux #3 (green label), Partagas, La Flor De Cano, Trinidad, and others. But for my money and smoking pleasure, Dominicans are the king of the cigar world at this time.
And if forced to choose the best cigar out there right now, I would have to say without question it is the Fuente Fuente Forbidden X. Even better than the Opus X.