Very true about the file sizes. My x900 churns out 24mb/s on 1080p mode which ends up being 90gb of disc space per hour. Not quite as bad as raw but you can also use h.264 on the BM to save space. The BM isnt going to be for everybody but im building a new pc for editing come september so i dont spend days on renders. My advice is BM if youu can, otherwise grab a Panasoniic x900/x920. I own the x900m and for $800 the op would be very satisfied IMO.