most effective bass traps


It seems that ASC has very popular bass traps, but at a significant cost. There are other companies that claim to have more effective bass traps. Is there any empirical (or subjective) evidence that one companies traps are more effective than another?
bflowers
Lenrd traps by Aurelex work just fine for me and are very effective. Plus, they don't cost and arm and a leg anddon't look too bad if you get the charcoal color, after awhile they blend into the room.
GIK, SensibleSoundSolutions, ASC, RealTraps, etc. use compressed fiberglas which is very effective. Foam is generally less effective for bass, especially.

As I said above, see the data at www.realtraps.com or look up the Wikipedia article on bass traps or consult studiotips website.

Kal
Ignoring the WAF, rolled up carpet remnants work wonders. I've seen these used in various rooms at the CES. If the WAF must be appeased, then they can be covered with grill cloth, like parts express sells. You should be able to do two corners for about $100.00
As Stevecham noted, the Auralex products do a very good job and are cost effective. My room was a charcoal gray color before I installed mine so they blended nicely.
Anyone tried the bass traps from the company the 'foam factory'? They seem cheaper than the others and there is also free shipping on orders over $75.