After going through a lot of middle/lower-middle priced tires such as Conti Ultra Sport, Michelin Lithion, Vittoria Zafiros, etc for the past 2 years, I had to buy a new set again but for a change I wanted to try those higher priced tires and see for myself.
I bought 2 Vittoria Open Corsa evo cx 320 tpi and after 100 miles I can say the old "you get what you paid for" proved true once again.
From the time I put air on them, the curved tubular-looking profile looked bigger than the other tires. The ride was really smooth and fast! Grippy and not hard even when pumped to 120 psi. max is 145.
At double the price of what I am used to buy, I will say that I wont go back to the 'middling' tires. Yes the extra money was worth it. I paid about 55 dollars per tire, tax included.
I know there are loyal followers of Conti GP4000s and Michelin PR3 but I have not tried them to make a comparison or comment.