I own a pair of Eris 8's and they have served me well in my old studio room which was 4,5 meters deep, 3 meters wide and 2,5 meter high. The room was well treated with bass traps and reflection panels.
However recently I've moved my studio into a small room in my house. It's quite a bit smaller (3,25 meters deep, 2 meters wide and 2,1 meters high). I've installed some panels to deal with first reflection points and put some panels in the corners at the back of the speakers, but can't do a lot more than that because of practical reasons (the room is getting very full!).
It sounds fine although I'm considering swapping the speakers for Eris 5's. Sonically the low ends get a little too much at times. Esthetically the Eris 8's look a bit too big in this room, although this is not my main concern.
My question is, would you consider the Eris 8 too big for my room? If yes, my main concern becomes then: would the Eris 5 lack too much low end for the wide range of music I create and mix? And if so, any ideas to compensate for that? I make pop to metal to EDM to epic orchestral