I think it could look a little better still, but that's just me. I am happy with it, as I hated the previous releases, except for the old Orion DVD release and Criterion LD/DVD.
I don't like the 5.1 one though, it sounds too fake and flat in my opinion. The stereo track on the Criterion sounds slightly more aggressive in parts, and there are other parts that sound clearer. For example, when we are introduced to ED-209 at the start, there is more of a electrical humming/buzz to ED-209 on the stereo mixes than in 5.1.