The biggest issue ive had (ive only used ubuntu) is the file management. Disks and file system is a bit different from boyh mac and windows, and i had a hard yime figuring out where and how, etc.
I couldnt figure out how to get my home network to work (so my windows pc could grab files off the linux pc) and such.
I had no issues setting that up, between my mac/windows pcs
I do plan on installing linux for my sons pc which he will then be forced to learn to some degree.