When using Valves, a particular selection of Valve put to service, can in some cases, create an impression the End Sound has a Sound Stage that seemingly fills the space within the Room.
For this reason only I suggest Valves, as you have stated "Big Space".
I am familiar with both Valve DAC’s and SS and even though prefer the Valve used in the circuit of a DAC, when it is without doubt having been the ideal selection for a Valve, remain to find it difficult to prejudice against certain SS DAC Models when heard as standalone demo’s or during SS vs Valve Demo’s. Very good impression is on offer from both circuit types.
It really is important to invest time into doing footwork and create ’sat in front of’ experiences. Only then will description supplied by others start to make any useful sense.
The Thread in the Link directs to a reasonable discussion had on a selection of DAC's that are costing up to $3K, this might be a worthwhile read if this is where the Budget is constrained to.
If moving towards $5K I have a another DAC I introduce.
For the Record, I use a PS Audio PWT Mk II and a Bespoke produced Valve DAC.

