Well, firstly take a look at my computer specs in my signature.
I'm running 1.8 PD with almost max setting. I did the same with the Rift.
You don't have screen door. I mean, its clear man. You can read instruments better, you can see further and clearer. No its not a revolution but a very good evolution.
The thing I don't like is that with the Rift it seemed you had better peripheral clarity where with the Odyssey you get a clear picture looking forward but its blurred to the sides. Takes a bit to get used to but once you do, its a great upgrade.