20mm on OMD concerns

I had the 20mm, and now the 14mm and 25mm, all panny primes, which all get their fair share of use on my OMD. I had the slow focusing and banding issues with the 20mm, which is why I traded it in for the 25mm then later got the 14mm. This was on firmware 1.5.

The biggest issue I find with all the panny primes is the color fringing. All of them exhibit really bad purple fringing (an issue that is largely absent from my 45mm oly). It's not too bad if you have Light Room, because it can be cleaned up pretty easily, but it gets annoying, especially with images that already have a lot of purple.

Other than that I have no real concerns, image quality is superb, though bokeh is noticeably better on the 25mm compared to 20mm.