The sweet spot for sharpness is quite small in the rift, I find it needs to be slightly angled downwards, and the front of the HMD pivots to allow this. Even during use I have to keep adjusting it to keep the image sharp. Also getting the IPD right in the original setup procedure has a big effect.
Anyway, glad you like it.
I can second that observation. A slight downward angle will improve the sharpness of the Oculus, at least in my experience.