Advice please.

You can do better potentially.  The question is what do you want in terms of sound?  
Are you looking for enhanced detail or a better, more immersive soundstage or a bit of both.  The two speakers you mention are wonderful in terms of detail.  Not so sure about Soundstage.

I would look seriously at the Revel Performa3 F208s.  They will pair well with your amp and will give a better soundstage. 
You should also look at Scansonic.  The MB3.5 B and the MB5 B are obscenely good speakers and will work well in a room your size.  There are several reviews of the MB5s and they have since been redesigned.  
I am a Scansonic dealer.  I have no relationship with Revel.  

You can do a lot better, even at new prices.  And if you considered gently used, you could get something great.  Just looking at Audiogon today: Dynaudio Contour 30, Spendor D7, Reference 3A SEMA, PMC Twenty5 24, Fyne F702.  You could wait for a Vandersteen Treo CT.  Check the "other" listing site too.  The world's your oyster.

Thank you all very much for your help I appreciate it.

The good news is that your amp is going to drive just about anything! And 20x20 is not  a "rather small" listening room - that's a lot of space to fill.
With that in mind, the aforementioned Reference 3A SEMA and the PMC will do well. You should also look into Dali speakers. They fill the room at moderate volumes as you mentioned.

What aspects of stereo performance are most important to you, and what would you like to improve upon over your current speakers?