KEF R700 Opinions please

Recently I visited a show room that I discovered only a couple miles from my house. I was curious so I went in and got to talking with the manager. I am new to the "hobby," enjoy keeping an open mind and listening to others opinions. I asked him to play me what he thought were the "best" speakers in the $3k range in the store.

He played me the Magnepan 1.7i’s which sounded nice. Very detailed but not much meat on the bone so to speak. My Vandersteen 2ce Sig II’s have a lot more slam to them. He played me another speaker, which I cannot remember, and didn’t care for at all.

For sh*ts and giggles he put on a pair or KEF R700s. We were also talking about MQA at this point..

I told him I am a drummer so he must’ve assumed I would like Phil Collins, "In The Air Tonight."

First he played me the non-MQA version from Tidal. It sounded good....
Then he played the MQA version.

It was like the sound was emanating from the entire wall, which was probably 18" foot wide by 10’ foot high. The speakers completely disappeared into the room. Massive sound stage!!!

Questions:

- Does anyone have any opinions on the KEF R700’s? I know they go for $4k new but I’ve seen them for $2k used.
- Are they a highly regarded speaker in the industry/ among audiophiles? Should I care?
- Was my experience with MQA vs. non-MQA tracks typical with respect to having a massive sound stage? or did this have more to do with the room or the speaker itself?