Need feedback on loudspeakers


Hello All,
I have been researching a lot about loudspeakers lately - their measurements including sensitivity, impedance, phase, etc to make sure that they match in my system. Also had a chance to listen to a couple, but yet undecided, since I am not able to listen to all of the ones I have shortlisted below. I have a very short list of criteria for the speakers:

Sensitivity more than 88db
Nominal impedance 8 ohms and minimum not dipping below 3.5 ohms
Go down to about 27-30Hz
Price range is about $7k new/used

The loudspeakers that I have short listed are:
Spendor D7
PSB Imagine T3
ProAc D30
PMC Twenty 24
Tannoy Definition DC10T
Revel F208
Focal 1038 (used)

Could also consider the following, but not sure if they would match in my system because of their nominal 4 ohms impedance:
Sonus Faber Olympica III (used)
ProAc D40R (used)
Audio Physic Scorpio 25 (used)
PMC Twenty 26 (used, but has low sensitivity)

I love speakers that have the sound image starting about 2-3 feet behind the speaker front face, throw a wide image and disappear completely. That is what my current speakers do. My room is 15 X 18 X 8 and the speakers are placed very precisely (5feet from back wall and 3 feet from side walls) to achieve this imaging. I have a few panels to tame the sound in the room. My amp is Parasound A21 and I have an excellent Promitheus TVC. Current sources are able to effectively drive the amp and the speakers, without any issues.
I have listened to PSB Imagine T3 and Audio Physic Classic 20, and found that they image per my liking.
I know I have listed too many speakers. But would love to hear from owners of these brands on the "vocal characteristic" of the loudspeakers, now that I have provided a brief explanation of my preferences. There is no denying that the best way to seek a set of speakers is to audition in person. But sometimes this is not possible. Please provide your feedback, as much as you can. Thank You in advance!
milpai
I think you may be confusing sensitivity and efficiency? For an amp like yours, I’d only look at sensitivity (usually spec’d at 2.83V). Provided the amp can drive the impedance (yours can), an 88dB sensitivity 4 ohms speaker will play just as loud as an 88dB sensitivity 8 ohm speaker, with no difference in volume setting for equal output. The efficiency (rated at 1W, not at a voltage!) of the 4 ohm speaker would be 3dB lower, but that doesn’t actually matter (at any volume setting level, the amp will put 3dB more power into the 4 ohms than into 8 ohms, that’s all).
If you can run at 4 ohm, I recommend adding Wilson Sophia 2's to your list.  I recently upgraded my speakers to this model and I am extremely happy.  Prices used are excellent at about $6500 - $7500 right now, darn good value for a $16,700 speaker.
My only advice is very generic. When possible, you should always audition speakers at home. 
Seriously  look at ClaytoN Shaw Speaker the Hologram-3
Open baffle speaker. 45 day audition.  Buy the S version better compression driver
And a turbo Xover option. It is s open baffle design, 2-15 inch drivers 
And a Great compression driver 94db @1W 4 ohm and crossover at a very low
800 HZ. At only 3 ft tall it sound great and very open yet images very good.
I had the revel F8 which were pretty redpectable. The Spatial audio M3
Beat them on many levels  .and who else will give you 45 days to try out.
Great speakers   .

Paraneer,
When I hear the Imagine T3, they had partnered it with the NAD. I feel digital amp tech has not yet caught with Class AB amplification. The Totem Forest Signatures were driven by some nice McIntosh. I felt that was the reason why the NAD sound felt a bit "blunt" compared to the Totems. The salesman was pushing me to the Totem and that is what put me off.
How would you describe the sound of the Spendors compared to the PSB?
About the Olympicas, I have read a number of threads that stated they do not go a deep. For the price that one pays for these loudspeakers, I would hope they would go much deeper. They are rated as 40Hz and that is what my current speakers rated. I am sure the quality of Sonus 40Hz is much better than my loudspeaker 40Hz. I will try to audition them.

bwaslo,
I am sure, it is sensitivity I am thinking.

marktomaras,
Thank You for the suggestion. But Wilsons are not on my list.

gsm18439,
Absolutely agree. Trust me, when I built the system in 2005, I was in the Bay Area (CA) and every single component was purchased from brick-n-mortar shop, except for the cables. My amplifier dealer at that point, loaned me NAD, Cambridge and Arcam integrated to listen at my home. But with many brick-n-mortar shops closing down, this is unfortunately not possible, unless you live in/near a big city.

audioman58,
I am really not into open baffle loudspeakers, at least for now. Who knows how things change in future.

Please keep the feedback coming. Would really like to hear about various characteristics of the loudspeakers listed. If you have compared any of the speakers listed above, would like to hear about their strengths and weakness.