Been to both. Meat Market is very anonymous. That's the kick of course. But at Fuxkboxx you can choose. To take dick anonymously as a bottom in the boxx. Or take loads in the open area, where men just fuck. No reservations, just fucking or taking dick. Or you can go to the darkroom and get fucked in the dark. I like Fuckboxx better than Meat Market. At Fb you can see who you fuck. In the open area, or when the man of your choice goes into the box. Go to the boxx and put your dick in to enjoy his ass.
Bottoms can go in and out of the boxx when they feel like it. At the bar you can talk to them, about taking loads, their life, interests, whatever. You see guys fucking everywhere. This, for me, makes Fb much hotter than MM.
It's not just fucking some hole. At FB you choose how anonymous you want it.