I switched from Acuvue 2 to Oasys and it was a huge improvement. I only get dryness when I’ve got a consistent breeze on my face. (NB: I never wear them during sleep. That just seems to me like a fantastic way to get an eye infection.)
In one, my eyes feel dry and itchy after just a few hours. In another (more expensive, of course), I can go 12 hours without discomfort.
I'm in dailies, so I'm kind of a weird case. Makes sense though because I use them predominately for social events and athletics.
The ones that get itchy for me are Acuvue Moist.
A step better is Dailies AquaComfort Plus by Alcon/Novartis.
The really nice ones (comfortable for 12+ hours) are Dailies Total 1 by Alcon/Novartis. My optometrist described them as "the Cadillac of contacts," so I'm guessing they're expensive (I'm still working through my stock of Acuvue contacts).