[JohnR]

Make a pair!

http://www.madisoundspeakerstore.com/approx-3-fullrange/aurasound-ns3-193-4a-3-extended-range-4-ohm-silver-cone/

(For example  )

[milford3]

I have the M2v3 in my bedroom

http://www.axiomaudio.com/m2.html

[sts9fan]

Make a pair!

http://www.madisoundspeakerstore.com/approx-3-fullrange/aurasound-ns3-193-4a-3-extended-range-4-ohm-silver-cone/

(For example  )

I have shame for not wanting to build a pair. 
That said I have a brand new pair of Mark Alpair 7.3 that I could use. 

[neekomax]

I have the M2v3 in my bedroom

http://www.axiomaudio.com/m2.html

Nice!

[JohnR]

I have shame for not wanting to build a pair. 
That said I have a brand new pair of Mark Alpair 7.3 that I could use.

Well, that should certainly be an upgrade from my suggestion

[I.Greyhound Fan]

I agree, NHT's.  But also consider PSB B4's, Monitor Audio's  M series , PSB Alpha B1's, Paradigm Atoms, B&W 686's.  If you want to go budget, consider infinty Primus 152's, stereophile gave then a good write up a few years ago.

http://www.stereophile.com/budgetcomponents/404infinity/

here's a review on the $250pr PSB Alpha B1's-
http://www.stereophile.com/standloudspeakers/580

[JLM]

Gallo Micro or A'Diva?  (roundsound.com)  Colorful/round, great for baby.

TBI Majestic Diamond I or IR  (tbisound.com)  Maker of those amazing/compact subs.

All are at or under $600/pair.  All are under 6 inches across.  All wall mountable.  All placement friendly (even bookshelfs).  Bass response rated as low as 40 Hz.

[mrhyfy]

These Swans are very nice. I have the D2.1  se+ and love them.

http://www.theaudioinsider.com/product_info.php?p=swan-d1-1se&products_id=140

[wharfrat]

Sts9fan- I sent you a PM.

[sts9fan]

I listened to the PSB Mini yesterday. They are very good!!

[sts9fan]

I ended up buying a pair of the Paradigm Millenia One.
The are solidly built come with mounting hardware. They sounded quite good mounted on walls at the shop.