I think it's somewhat dependent on room size. If your room is big enough, do as Pdreher suggests and save a bit longer and get a pair of C4's and you'll never look back. I had the C2's in a medium-sized room (14x18x8) and was satisfied with them as full-range speakers on a wide range of music. When I moved them to a large, open LR, I wasn't.
I've never heard the 5.4's. I would guess that, despite the measurements, they sound fuller in the bottom end, and if your room / music tastes required that, they'd be the better choice. Personally, I'd stay in the Confidence line.
I've never heard the 5.4's. I would guess that, despite the measurements, they sound fuller in the bottom end, and if your room / music tastes required that, they'd be the better choice. Personally, I'd stay in the Confidence line.