They're both overkill for video blogging.
XF100 is nice with 4:2:2 but 50mbps mpeg2 will be a pain in the ass to edit and not so nice due to large file sizes - you'll probably want to preserve the original recordings so be prepared to buy loads of dvds or bluray discs for backup). Keep in mind that in the end, you'll still have to compress in 4:2:0 for Youtube, otherwise Youtube will recompress it for you, so 4:2:2 will only be useful during editing (for chroma-key).
At that kind of money, and considering it's for blogging, I'd actually recommend going for something like
Sony FDR-AX100.
It's a 4k camera ( 3840x2160 30fps or 24fps progressive) , has big CMOS sensor, saves directly to 60mbps h264 with stereo or 5.1 dolby etc etc and can also record to 1080p 60 fps at 50mbps (so very good quality at compression) and it also supports 720p @ 120fps if you want to do some high speed recording for example.
As the sensor is large and the lens are also good for 4k, the quality for 1080p is great so you can record to 1080p or, you can record in 4k and then resize to 1080p during rendering of the content for better quality.
Works with SDXC class 10 cards for 4k content, sdxc or sdhc class 4 for 1080p... has microphone and headphones inputs... has 62mm filter ring but it has built in ND filter so no need to buy that one separately..
The only weak point really is that it doesn't handle well very fast motion when recording in 4k, due to the fact that it's limited at 30p (rolling shutter, moving trains or stuff like that won't record well). But for blogging, it's perfect.
Set the below video to 4K and watch the review: