rendering movies from Canon XA10

Hi,
I just got my new Canon XA10 camera and trying to edit clips from it.
Previously I successfully used kdenlive for several years to edit movies from Canon HV20.
I am having trouble choosing a suitable profile for rendering. Whatever I tried, seems to look somewhat (often a lot) worse than the original. The best output comes when choosing mp4 or (surprisingly) webm but still that is not good enough for me. I'd like the output to be indistinguishable in quality from the source. Otherwise, what's the point having such an expensive camera. I am using the highest quality video settings in XA10, shooting in the default 60i (which is reported as 59.96 but imported into kdenlive as 59.94, is that a problem?).
Anybody has some suggestions or worked out some workflow for XA10? Maybe not to edit the original clips but transcode them into something else before editing?
Or maybe I should shoot video in 30p or 24p?
I never had such problems with my old HV20. I just rendered everything as mpeg2 with the highest quality settings and the result was indistinguishable from the source in quality.
Thank you,
Igor