Linux Mint MATE is set up pretty well by defaults for people familiar with windows, Ubuntu might be different enough to kinda confuse some people, but they're both pretty easy to use.
Other people like Zorin or ElementaryOS, so maybe worth trying as well. Good thing with most Linux distros you don't have to install them to try them out, just boot to live dvd or usb and see what works for you.
For me, I think Mageia is easier than Unbuntu. Its graphical interface allows practically everything without going through a console. There are fewer defects and fewer new versions but the community is more restricted.
I like Linux Mint Mate, have all codecs, and allmost the sofware that i need. I use it on 3 laptop and 1 desktop without any error. On 1(Acer Aspire E5-573-50JK or IK) from 3 laptop I tested windows 10 and I contorized 786 errors in 4 day of use. and 8 BSOD ))))(it was installed just windows, and the drivers that found in windows update).