High frequency sounds tend to buzz sometimes and low frequency sounds tend to buzz as well depending on the scene and how quite background sounds are. I remember having a copy of Apocalypse Now on VHS Hi-Fi and the jungle scene where the tiger jumps out! Just before that where the Willard stops, and looks straight ahead, there’s this annoying buzzing on the lows.
So no VHS Hi-Fi isn’t a good source Laserdisc is its more pure sounding. I have a very early PAL laserdisc of Star Wars that was pressed back in (1982) which as been transferred to DVD-RW.
There is a bit of noise on it due to the analogue fm stereo track its Dolby stereo encoded and thou I can use the (CX noise reduction) on the laserdisc player to reduce the noise level it wasn’t a bad transfer.