No probs, I bought both but have not done proper comparisons on them (been too busy). I personally prefer the EPQ304 (with fan mod). One reason not previously brought up is, while it also looks more professional/rack-mountable it can use balanced cables for its source inputs.
As it is not relying on unbalanced inputs like the Nobsound does with its RCA connections. So the EPQ 304 will not suffer from any potential interference from airwaves or other electronics.
A plinth/base of some type for the cockpit is the way forward. You could add various isolation to this and maybe even use the base if you wanted to store amps and cables. Depends how much work you want to give yourself but yes I have the same issue as my rig is upstairs in a bedroom.
For a cheap solution, then an mdf board covered with 1-3 layers of different sound/vibration isolation, and with 4-5 of
these in beneath could be rather effective. Just an idea, depends on what dimensions you intend to use for a base as well what may be suitable.