Boom:

I listen to my audio system at about 11' back. It is comprised of M2s + 2 X EP400 subs that fill my rather large, open room with articulate, quality sound. It is easily driven by my low powered tube amp & the robust, distortion free bass is most impressive.

My long & satisfactory experience with Sats + Sub(s) systems over the years does not jive with your friend's strong opinions. IMHO, there are just not many towers that reach as deeply as quality subs unless they are monsters with a price to match.

Check mine out in the gallery here & notice how my systems have morphed into what I think is my present killer setup:

http://www.axiomaudio.com/blog/home-theater-pictures/?album=1&gallery=139

Furthermore, Sats + Sub(s) systems have the distinct advantage in being able to dial in the bass level as you like it - but don't overdo it, ha!

TAM