I liked it the moment I tried it. Although I still have to wait till Christmas to use it again since it's a gift. I also use it with a cover on, it was slippery to hold for me without one. I don't know if that would be an issue for you. Others have found a work around with grips or skins. I also don't hold it over my head when reading in bed, so it wasn't a problem for me there either, as it was a deal breaker for some.
The screen looked even and a cream color, my Voyage has a brighter screen and I like both, again not a problem to me. Both have good contrast. I guess like everyone has said you just have to try one to know for sure if the larger Oasis is right for you. The waterproofing is a plus, and the audio is not something I use now, but who knows maybe someday I might need it.