Looking into speaker upgrade/change?

Great amp!  Clayton doesn’t get near enough attention IMHO.  Anyway, my tastes agree with yours on all the speakers you mentioned.  If that means anything, there’s a nice pair of Usher CL- 8571 lls for sale here now with the upgraded diamond tweeter for $3400 that are insanely good and ridiculous at that price.  Usher is another standout that flies under the radar here for whatever reason.  If they don’t work for you, there are Joseph Audio Perspectives (original model) that can be had near $6k that are also awesome with a smaller footprint, and you can get them upgraded to the Graphine version if you ever feel like it.  Given your amp and tastes these may be worth a good look.  Best of luck. 

Get some vinyl.

I can't make a comparison to the other speakers listed but I love my Revel F208's. My Arcam SR250 doesn't seem to have any problems powering them for what it's worth. 

I love my Aerial’s but if you don’t have a big amp don’t bother as they will not come alive. My 7B’s have plenty of bottom end but it took me sometime to dial them into my room with the right cables, dedicated circuits, room treatment and etc. I know the 6T is a friendlier load than the 7B but with your amp I’d look at others on your list first.

I have listened to the Revel F208’s at local shop and those are wonderful speakers. Can’t speak for the AP but have read great things over the years on them. 

Find a used pair of Vandersteen Model 5As.  Got mine in really great condition for $6000 a year ago.  All the bass you will need plus adjustable 11 band EQ and other adjustments.  I rebuilt a Luxkit Class A amp and it drives them easily and the sound is amazing.  So the amp really drives the mids on up and the subs in each speaker are driven but their own amps,  They are also not so larger that they will not work in smaller rooms.  I am not a Vandersteen fan boy either.  I am always looking for something better but so far I hear differences but nothing to make me change yet and I have yet to have them set-up correctly using the Vandersteen manual and test tones.  Maybe latter this year!

If you are a phile located person I am in Northern NJ come by for a listen, meet some great people, and I'll serve lunch.  Anyone in the area or visiting the NYC area is welcome.

Happy Listening.