I am a fan of monitors in smaller rooms.
I have heard some like Dynaudio and Totem that can also sound very convincing in a larger room, but in general I would go with a larger speaker, monitor or otherwise, in a larger room or else add a sub.
Also I should note that I find thinness with good moniters relative to larger designs generally only becomes an issue for me when volume goes up. At low to moderate volumes, in adequately sized rooms, most any monitor I would call good does fine.
I have heard some like Dynaudio and Totem that can also sound very convincing in a larger room, but in general I would go with a larger speaker, monitor or otherwise, in a larger room or else add a sub.
Also I should note that I find thinness with good moniters relative to larger designs generally only becomes an issue for me when volume goes up. At low to moderate volumes, in adequately sized rooms, most any monitor I would call good does fine.