thank you guys!!!
I don't think I see a difference in quality between the 2 codecs. Maybe when I zoom in, I can see that magicyuv is slightly better. So Cineform compression should be enough for me.
MagicYUV(766mbps) Vs Cineform(332mbps)
http://screenshotcomparison.com/comp....php?id=116034
MagicYUV(766mbps) Vs Cineform(183mbps)
http://screenshotcomparison.com/comp....php?id=116035
once encoded to hevc 25mbps:
http://screenshotcomparison.com/comp....php?id=116040