This is probably only sorted by demoing other people's setups. Meridian has a unique sound which I would call nearly monitor-like especially compared to how most non-euro speaker systems are tuned. I'd think that any large Meridian setup (going back to 6k and up to new 8k with everything in between.. (so anything bigger than 5/5200) would compete with and possibly better your setup.

main room: 861v4, 2x6000L/R (24/96) 1x5500HC (24/96), 2x DSP33(Rears)
MS200/Roon, 598, Revox b710mkII tape deck, Revox b760 FM tuner, Revox b790 turntable
bedroom: 568.2mm, 3x5000(LCR) (24/96)