https://www.spatialaudiolab.com/
I specifically went to open baffle speakers after researching how to do room treatments. I mention this because the primary benefit of open baffle speakers is that they don't "interact" with room as much as boxed speakers. So the need for room treatments is less. I did measure my room with my previous boxed speakers (B&W) and my current open baffle speakers (Spatial Audio X5) and the room measures a lot better with the open baffle speakers so I can confirm the primary benefit of OB speakers in my space runs true. It's particularly true in the lower frequencies (under 300). The primary complaint about OB speakers is that they lack the "bass impact" or "bass slam" and that is true. However, is bass slam representative of "real" (live) music? I have plenty of bass with my OBs but you just don't feel it like a shockwave.
Spatial Audio does a lot right in their X series -- DSP controlled bass and tweeter with a waveguide for direct connectivity being the strength of their design (beyond the OB benefit!).
Are they big? Well they are both big and small. They are wider than traditional speakers but they are a lot thinner. I actually feel like they are less imposing than my B&Ws. If you're not "used to" OBs....you may think "those drivers are ridiculously large" but the drivers need to be large in OBs.
Do they need to be way out in the room? Well boxed speakers sound better when floated off the front wall too, right? In my room, I have them 3.5' off the front wall and my room is 22' deep so it's a rather normal speaker placement IMO.