I can't see Mak/Nok coming out with a multi freq that could rival the Nox in value or performance, they don't have the years of experience that Minelab have in multi freqs.
In the UK the Nox sold by the truck loads, and there's very few to be found 2nd hand, unlike the Multi Kruzers and Impacts which folk are finding hard to shift. The Nox is ideal for the smaller hammered silver and gold found in the UK and europe, it's a versatile relic unit, i can't see any situation here where folk will off load their proven Nox for a minor league companies first attempt at multi freq, maybe in the US it's different as you's like a strong TID unit for higer conductors, personally i'd wait till version v2-3-4-5 is out and they try and get upto speed with Minelab.
They've already surpassed Minelab in build quality (Equinox doesn't compare to Kruzer. Ask Equinox owners forced to buy a 3rd party shaft.) and customer service.
Their tech is moving ahead so much faster than the other detector companies I'm surprised you don't think they'll catch or surpass Minelab with their next release.
Time will tell.