Type of flooring in a listening room?


Hi, I am considering new flooring in my listening room. I currently have wall to wall carpet in a 14x22 ft. room. The carpet is on a concrete slab floor. The speakers sit on the long wall about 4 ft. from the back wall and about 8 ft. apart. My listening seat is about 8 ft. from the speakers. 

I am considering a Vinyl Plank flooring called COREtec Plus. It has a thin layer of cork backing for sound deadening, but I think this is mainly for footfalls when walking across the floor. Does anyone have opinions on the effect of sound with a vinyl plank flooring vs. wall to wall carpet. I do not want to put up sound absorbing material all over the room. I know that would not go over well with my wife. 
slowhand
An engineered floor can be problematic on a concrete slab. For my basement music room, my builder's supply store recommended against any type of wooden floor, even hardwood. Condensation issues, flooding issues, etc. Don't know if that could be a problem for you, but it's something to consider.

I eventually went with granite tile, which of course sounds bright. I mitigated this with a textured ceiling and irregular walls. And a large persian carpet. The room sounds lively but natural with ESL's. 
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Carpet (Berber) over a concrete slab is optimal. Further room tuning can be accplished w/ drapes, wall tuning treatments, even ceiling tuning treatments.  The possibilities are endless.