Klipsch La Scala 2018 or the Triangle Cello?

I dont think these speakers share the same goals one bit. Fundamentally different speakers with very different design goals. For my tastes I would go with the Cellos as I am not a fan of much of what horns do except dynamics. Comes down to preference of the type of sound you desire. You can get by with a lower powered amp with the Klipsch, but from what I understand the impedance of these Klipsch drops below 4 ohms which I consider a design flaw for a horn speaker.

Lascala = Fully horn loaded 3 way.......Cello = Horn loaded tweeter down to 2800hz, 2 way, hybrid system ( transmission line mids / bass )........Lascala = 175 lbs, big box......Cello 75 lb slender, beautifully tapered design.......Lascala is 10 db or more efficient......not sure of the tweeter problem mentioned above, as I have never in 50 years heard a tweeter issue with Klipsch Heritage ( maybe wrong electronics, bad crossover component, or improper toe in, which is critical with them, etc. ) The Lascala midrange was always the issue ( a simple horn damping mod ), and as mitch2 mentioned above, a swarm system can be added ( the Lascala can use help with the last octave ). The Lascala bass is amazingly fast, tight, and tuneful, and remains coherent, into the midrange. As mentioned above, 2 somewhat different animals. Can you guess which way I lean ? Enjoy, be well and stay safe. Always, MrD.

For my tastes I would go with the Cellos as I am not a fan of much of what horns do except dynamics.

Yeah I get it. Texturally rich midrange, correct timbre, low level detail. These things aren't for everyone.

Settle down Ozzy I have a right to my opinion. 

You can't go wrong with Triangle Cellos. They project and have a detailed and warm presence.