Caster Wheels vs. Spikes


My Tekton Double Impacts came with caster wheels, which made them very easy to move and reposition. They are sitting on probably fake wood floors in my apartment. They sound great now, but I can't help but wonder if I'm leaving SQ on the table by not having them on spikes. Some people say I must use spikes, others (including Erik Alexander) say wheels are just fine. They are super heavy so the wheels are not easy to take off. I want to make sure it's worth doing. What are your experiences and thoughts?
divertiti
I have Vandersteen speakers that weigh 200 lbs each.  They came with spikes, but I tried them without...just inquisitive.  They are very much better with the spikes.  Everyone makes their own decisions.. with wood floors, the results might be defferent.
I assume by fake wood floors you mean suspended floor, in which case the spikes are generally not recommended. Castors are better isolators.
Post removed 
Oh, you are SO losing out by using casters! The difference is OBVIOUS. No true audiophile would use casters! Once you hear spikes you will NEVER want to go back! 

Hey, wait! I put casters on the Vapor Audio Joule White speakers! Nevermind.   ;) 

No one here has figured out the most important variable between spikes and casters.