The only thing that would make the 5.4 "tubby" is too small an amplifier or the wrong room. The 5.4 is a three way speaker and needs a decent sized room to breath, the C-2 does not need as big of a room and is easier to integrate. Both are highly refined speakers but the C-2 is the more refined of the two, it gives up a little to the 5.4 in output but not too much.
