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!