If I was buying a full-size with MX Browns for myself, I would probably go with a modern Ducky, like the One Two or Shine 7.
Especially if it has HyperGlide Browns, which seem to shine in the Ducky. [It is sometimes indicated in a label on the box.] If you ask mechanicalkeyboards.com, they sometimes can tell you if it has Hyperglides.
Only downside is, the HyperGlide molds are worn now, so unless it is older stock, it might not be as good as the 2019/2020 Hyperglides.
Another option is to get a decent hotswap board like the Archon AK89. It has crap stabilizers, but you can replace them. The nice thing about it is that it is pretty dampened for a factory board, so you get less ping and a more muffled sound for office typing. [This works better with silenced switches than Browns]. I tried Hyperglides in it with GMK and it was a good typing experience.
But hotswap keyboards may not be durable enough for 16/hr day typing. I am typing on a Filco Majestouch 2 with MX Browns from about 2016 or so. It has survived bad maintenance and many, many keycap changes. I am using DCS profile keycaps. I find that thick, low-profile ABS keycaps are best for MX Browns. So if you do get a Ducky, or even a Filco, I recommend any DCS or, failing that, GMK.