Itzhac1968 - B&W 800s are in many of the studios at Abbey Road, so I don’t think your anti-B&W rant holds much water. For the OP’s reference: Abbey Road also use ATC. I work up there at times and the mastering room I work in uses PMC monitors, made of mdf.
There are a lot of well written informative replies regarding ATC on this thread. Hopefully they dispel the misguided concerns of the OP regarding MDF. I have heard their 150 active speakers at the Munich high-end Hi-Fi show and it was the second best sounding room in the show to my ears, and the source was their £3k CD player/pre-amp combo. So it was one of the lower-priced rooms and one of the best sounding - far better than the magico room for what it’s worth. ATC had the volume cranked up though, and that helped.
There are a lot of well written informative replies regarding ATC on this thread. Hopefully they dispel the misguided concerns of the OP regarding MDF. I have heard their 150 active speakers at the Munich high-end Hi-Fi show and it was the second best sounding room in the show to my ears, and the source was their £3k CD player/pre-amp combo. So it was one of the lower-priced rooms and one of the best sounding - far better than the magico room for what it’s worth. ATC had the volume cranked up though, and that helped.