just got my new M-Audio BX8a Deluxe (finally) and they sound amazing especially considering how cheap they are.

Question:  Should I only place them the standard way, meaning tweeter on top?  They really fit my work environment laying on their sides (at least for now anyway).  M-Audio dose NOT recommend this in the manual BTW.

your thoughts?

You can place it sideways with tweeter on the outside.  that is pretty standard too i think.

Can you even hear the difference? 

found this today
http://www.gearslutz.com/board/high-end/53127-studio-monitors-vertical-vs-horizontal.html