I just did this myself. Went to KEF LS50s, a REL 218 and an Arcam integrated - great system for 4k. Agree with Johnnyb53, obviously, and although I have not heard it, I think his B&W recommendation would even be a bit better perhaps. I had the B&W 804 Diamonds in my last rig, and what the KEFs get right in all areas, the B&Ws just have a bit more musicality perhaps. I would also consider the smallest Harbeth PS with a REL sub. If you have the money and depending on your new room size, you might just find heaven with the Monitor 30s, which are a bit bigger than you were looking for.