Klipsch La Scala Dilemma

The size of your room and what you listen to will have a bearing on the outcome. If you listen VERY LOUD, the La Scalas would probably be the better choice, IMO.
But I would not take La Scalas over Lores.

I had Klipschorns in what I consider to be a good setup for them. I had good corners, and I drove them with a few different amps: A 100 watt tube integrated, a 75 watt SS integrated, and a 2A3 SET. At some point I saw an ad for Tekton Katz Meow V1, similar to the Lore but with different 8" drivers. I had a 30-day money back, so I figured what the heck.
Long story short - I gladly sold the KHorns. Never looked back.
I now have those Katz and also own a pair of Lores. I'd take either over KHorns.
I've never heard LSs so I can't comment.

FWIW - I repleced the crossovers with Crites, sealed them in the corners, reinforced the corners of my room, wrapped the mid horn, and some other well-known KHorn tweaks to get them sounding their best. They did sound very good, but not as good as the Katz or Lores. Most people who like Klipsch Heritage have modified them beyond normal tweaks/mods.
My room is 12' x 13'

Even as a former owner of K-Horns, I would advise against the La Scalas. I loved the K-Horns, but they are a specific taste, and that taste may not be yours. In addition, some people find them lacking in bass. They are also a little homely, if that matters to you.

I've never heard the Lores... or any Tekton speakers, for that matter, but I've listened to K-horns, Lascalas & Belles quite a bit. Have you ever heard any of the "Heritage" Klipsch speakers? If you like one, I think you'd like the others, they have very similar "flavor". My guess is, if you have the room for LaScalas, and like horn sound & dynamics, you won't be disappointed with the change. I find the sound from LaScalas to be VERY similar to K-horns, even closer than Belles, I think because they use exactly the same tweeter & mid horns as the K-horns, where as the Belles use a different mid horn (in order to make the cabinet shallower).
As far as Roxy54's comment, I can't imagine the LaScalas giving up any bass to the Lores, but again I haven't hears the Lores, so I could be wrong on that. Just seems unlikely those relatively small Tektons could generate as much bass as a Klipsch folded horn.

Cliff

Take the LaScalas. Like Cliff, I haven't heard the Lores either, but I agree with his comments on the LaScalas - surely they will have just as much bass, and much more dynamic range (soft as well as loud).

LaScala for life. I would run from this deal....