I don't know that I've ever had fresh shrimp. I assume you're referring to shrimp that has never been frozen. I know with lobster, I can definitely tell if it's been frozen because it changes the texture of it. I much prefer fresh lobster.

I bought a big bag of Texas jumbo gulf shrimp yesterday, only to learn they still needed cleaned. I hate cleaning shrimp! It's too tedious for my clumsy hands and aging eyes!