Tweak: raising the subwoofer off the floor...

Yes, I have done this myself and like the results. I have a Vandersteen 2Wq. I took the spikes off the bottom and placed it on a Billy Bags amp stand with Vibrapods between them. I think it works great. This only raises it off the floor a few more inches. My plan is to buy an ASC(Acoustic Science Corp., makers of the Tube Trap)sub stand. This compines the benifits of the sort of decoupling I am using now and a bass trap in one. Check it out on their site.

works best w/ hard footers on front-firing subs. decoupling them from the floor improves articulation, but reduces volume. just turn the gain up & you'll be right back where you were, but tighter.

You are going to have to try it yourself. There is no such thing as "this is better than that". There are too many variables for a one size fits all mind set.