Spendor D7 vs. Spendor A7

I own the Spendor D9s and have spent time with the A7s.  I am going to assume the D7s are closer to the D9s than the A7s.  The A7s are fun speakers with surprising bass extension but lack the clarity in the highs that the “D” series supplies.  Very different levels of performance.  

The Spendors are checking a lot of boxes as I contemplate a new speaker purchase in 2019.  I plan to audition quite a few.  My question for this thread is what others thoughts would be between the D7 and D9 for use in a 20x15 room with 9.5 ft ceilings.  Which are better suited, all things being equal (which I know they never are)?  Standing at only 34 inches tall, the D7s seem a little small but I understand they project a large soundstage.

@three_easy_payments,The D9s should suit the 20X15X9.5 room. But lets hope you do not put them in any room smaller than 15X16. That would be the minimum. A poster I know here had the D9s in 13X10 room and was thoroughly disappointed and sold them. The D7 would also go well with the 20X15 room, even though they look diminutive.

@milpai 

Really appreciate this input.  Exactly the type of feedback I was looking for.  Thanks.

@milpai  or @drrsutliff 

The consensus is that the Spendor D series is better than the Spendor A7.  In a small room, 13X11, would the D7 be okay or would the bass be too much for the room?  Since my last post, I did hear the A7 in my house and the bass was fine and not excessive.  I worry the D7 with its two woofers will produce too much bass.
Thanks