I love the Aria series. I bought (on trial basis) three of the Focal Aria series models - 906, 926 and 948. The 906 was amazing and I wanted more. They went back and I had the 926 and the 948s delivered the same day.

I had a tough time choosing, but ended up keeping the 926s. I use stereo subs. The 948s were overkill with subs and for my room size (14’ x 21’).

The three models I bought sound very much alike. All four models have the same tweeter; it’s made of Boron, not Beryllium. The 926, 936 and 948 also all share the same midrange driver, so the differences are basically cabinet size, woofer size, and I would imagine some crossover changes.

I didn’t try the 936 but I can’t imagine it being much different from the others.

Oh about the prices: this speaker lineup has been around since 2013, and they stayed pretty cheap until recently. Yes, inflation’s part of it, but they are a quite a bit more expensive than they were two years ago.

I think the Arias sound wonderful. Smooth as butter. I don’t find the tweeters harsh at all but I do prefer slightly bright speakers. I have Kantas in my big room - I love them too (though they are fugly - the Arias are so simple and pretty), although it seems lots of folks find them to be too bright as well.

The advice about toe-in is spot-on. Arias prefer very little of it.

Hope this helps.

If you get the Kantas, I highly recommend the Gaia II footers. They improve the bass tremendously.  I recently sold a pristine used pair with the Gaias for $6500. Look for a clean used pair and go with the higher end. They look so much better. 

" All four models have the same tweeter; it’s made of Boron, not Beryllium. "

Clarify mac742's statement

The tweeters are some kind of aluminum/magesium mix with Poron used for its suspension.

From a materials site:

VTNF tweeter | Focal

I too find the Aria series quite nice. Almost bought a pair of 948's awhile back. Went with an older model ML stat instead.