IMO, the Hush pump offers far greater value. The cost to operate a Hush pump 24 hours per day is slightly less than running a 56 frame motor on cycles and the result is much more filtration and virtually quiet operation of the spa.
The Hush filters 42,000 gallons of water per day differing from most circ pumps which are again IMO, nearly useless. The "fish tank pumps" many spas have create poor results and have a short lifespan in comparison.
The question then becomes, if my cost of operation is similar, I can extend the lifespan of the jet pumps by not having them running on cycles, I can filter far more water per day and have a tub that doesn't create the humming noise most spas make during filtration cycles (while the tub is sitting in my back yard under my bedroom window...), why wouldn't I opt for the Hush?
I've been around both systems and I would never buy a Beachcomber spa without a Hush knowing the benefits to the end user.