Mamiya ZD 22 MP Digital Back...?

[haring]

I know the early versions of the Mamiya ZD 22 MP Digital Backs had some issues, namely that it had some ugly "purple worms"....
I am just wondering whether you are recommending this back for people photography for someone who is just about to enter the MF world. I am planning to buy a top back in the near future but I just want to get a more affordable back to start with...

1. Have you ever owned this back? Did you like it? Didn't you like it?

2. Does it make sense to start with a cheaper back?

3. How about colors on this back compared to other backs?

Thanks!