It HAS improved, but I'd say that we have some serious tweaking to get back to pre-harmonic... maybe 15 percent to go? 
 
Man, this stuff is so subjective.... 
 
I wish there were an easy way to have us vote up/down on certain migration/harmonic caused artifacts. 
 
My best comparison is a local OTA'd PBS channel that runs a very high bandwidth signal--and that consistently makes VOOM look down-rezzed. 
 
Luck to all the VOOM tech-types so we can move forward with Harmonic and soon hit the MPEG 4 change. 
 
[Well, if the company rolls onward... GRIN.] 
 
Rick