any benefits to having high band on my minidv camcorder?

high band : A type of video system in which the picture information is encoded on a much higher carrier frequency than early color video systems; the broadcast standard currently in use.

Yes.

could anyone tell me the benefits of high band?

No.

my guess is that it transfers multiple times closer to a “lossless” standard.
and it probably gets less radio interference.

i like that.