The LS50 Meta is a great speaker. In my room, it was much better than the LS50. Even in a small room, the KEF KC62 sub makes the LS50 Meta a homerun. Without the sub the bottom end is lacking.
The better the amplification on the LS50 Meta the better the sound. I tried the LS50 Meta with the CODA #16, Benchmark AHB2, PeachTree GAN1 (modded), and a few others. The more power the better and the quality of amp will also show through.
I recently got the Magnepan LRS+ for my office and I "think" it is better long term than the LS50 Meta. I use the LRS+ also with the KEF KC62 but it is not as essential with the LRS+. I have my LS50 Meta for sale now since I am lacking space to put it, but I may change my mind and alternate with the LRS+.
My room is 12 x 11 x 9 with 4 extra feet where I took out the closet door and stuffed my desk and computer monitors. This seems like the ideal sized room for the LS50 Meta and LRS+.
BTW - I am getting a PeachTree GAN400 amp ($2K) coming today for my LRS+. I have a feeling it would be great with the LS50 Meta and work with the LRS+. Maybe not as good as the modded Peachtree GAN1 I have but the GAN1 would not work for you.