I need help trying to decide which bookshelf speakers to purchase


Let me try to narrow it down.
I have an NAD T777 V3 with surround sound.  I am looking for two bookshelf speakers for stereo listening.  I want to keep the budget around $3K new or used.  Room size is 20' X 18' with an additional open foyer with a stair well and an opening to a hall way.  Not a totally closed square room.

So far I have tried the following speakers.  Elac UB5s, SVS Ultras, Revel Concerta 2 M16, Paradigm Prestige 15, and Dynaudio X18.  We don't have many audio stores around, so I can't listen to many speakers.  We have the Best Buys. and NFM, but not much else.  So far I have purchased all speakers without hearing them except the SVS Ultras.

I don't want to keep spending money on speakers without hearing them.  My plan is to get some recommendations on speakers, and travel to places that have new speakers so I can listen, or take a chance on used speakers without hearing them.

Let me list the speakers I have tried.  I would rate the speakers I have tried in this order (Favorite to least favorite)

Dynaudio X18,
Paradigm Prestige 15 (a close second),
SVS Ultras,
Elac UB5,
Revel M16

I noticed some speakers for sale on this site.

Totem Mani 2 Signatures,
T+A Elektroakustic TCD410,
Dynaudio Contour 20 Bookshelf Speakers


I know it's a stretch, but based on what I like in speakers so far, do you think I would like the ones I listed? What are their characteristics?
Thanks!
stttt
musicloversaudio, we do have Paradigm in town (KC) and I listened to them (Prestige 75F) and they sounded pretty good.  I agree they take up the same space when you consider a stand with a bookshelf on top of it.  I must be old school.  I like the bookshelf look. 
mrdon I had never heard of these Buchart S400's .  I am adding them to my list.  The reviews are good and they air ship them from Denmark free for a 30 day trial.  They must be confident.  I will say I would feel a bit guilty returning speakers all the way to Denmark if I did not like them.  Gotta
Totem Mani 2 are excellent but will need a decent amount of good quality power to come alive, need space around and behind them to show their potential, and require well built solid/heavy stands. Definitely not "book shelf" speakers.  
of the ones on your list, i was very impressed with the paradigm prestige + the dynaudio contour, though i don't know how they'd play with your nad (the dynaudio do need quite a bit of power). per jrpnde, however, i'd look seriously at psb, which has a definite synergy with nad--the synchrony are excellent and i frequently see them on ebay

Fritz Carrera and you're done.

Search this site for those names, and you'll find consistently glowing reviews.