I was able to do some more comparison shooting and I have decided to go with the HVX200a. Even though I wish it had some more resolution, I am unable to get the xa-h1 to compare in motion and color, and the EX1 mght as well be a very expensive sharp still camera to me with it's current issues.
So yay HVX-200a here I come.
A tough, but good choice.
I spent weeks shooting the HMC-150 and XH-A1 side by side and also trying to match color. I 100% agree with your observations. The max screen size I compared footage on was 51". On 51", the A1 footage is always little sharper when comparing the best of the best. In the end though, I sold the XH-A1s and am going with the HMC-150s for now. The tapeless, wide angle and extra low light sensitivity were what I need. With a tweaked scene file, the HMC-150 is cabable of pretty stunning HD images.
FYI, to even get close to matching XH-A1 & Panasonic color, you have to set the Pana knee to low and master pedestal to a +10ish number. But they never really matched, the Pana just has a much more filmic/production camera look.
BTW, Im glad I didn't get the EX-1, but my next cameras will certainly have 1/2" imagers. A HVX/HMC with 1/2" sensor block would be the ultimate camera. Probably gotta wait 2 or 3 years though.