I've got about 16 LENRDs in my room. Although obviously a "better like this, or better like this" back and forth comparison cannot be made with such a thing, I would say that the room sounds better with them installed and is much better than my old bass traps: piles of laundry stacked to the ceiling. I realize that the arguments for fiberglass being superior to foam are probably valid, but the foam looks much better, is easier to install and you don't have to worry about itchiness and mess. It can also be cut to fit. Ideally I would be using RealTraps if I could afford 'em, but then again big black rectangles aren't quite as cool as colorful spikes and wedges. Either one is better than hard walls!