The other possibility at a this point is for the OP to obtain one or another of these units that he is asking about from a place like Music Direct or another vendor that provides a "no questions" return policy. He can then decide if there is any sonic compromise. As to surge protection, it’s kind of like insurance, you buy it, but you don’t really want to have to rely on it given the circumstances which usually give rise to a claim.
I have one of those Furmans with a rack mount face and a 20 amp plug-- used it for ancillaries, it is rugged and never had any false trips either.
I have one of those Furmans with a rack mount face and a 20 amp plug-- used it for ancillaries, it is rugged and never had any false trips either.