I have used one of these for several years to power all the 12v equipment in the shack:
I have no connection to M0UKD, but his review popped up when I searched for more info before recommending it, and I would agree with his findings.
Mine is the 40A version, with analogue meters, and badged "Lowe".
Seems well made, no interference, and I don't find the fan objectionable, but then my hearing is not what it once was ;o)
PS Enjoyed meeting you on Holyhead Mountain recently Richard.