A generation apart: Klipsch The Fives II is the newer design, against a 2022 model. Newer is not automatically better, but the older one is more likely to be discounted or near run-out.
| Area | Better | Why |
|---|
| Bass | A | Klipsch The Fives II digs deeper - 50Hz against 54Hz. A subwoofer would even that out. |
| Connections | B | Klipsch The Fives II adds phono; KEF LSX II adds Wi-Fi and streaming. |
| Size | depends | KEF LSX II is easier to place; Klipsch The Fives II is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | Klipsch The Fives II: a sub output; KEF LSX II: a sub output. |
| Price | evenly matched | Much the same money ($1,399 vs $1,500 a pair). |
A Klipsch The Fives II B KEF LSX II
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. In a large or open-plan room, Klipsch The Fives II has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, KEF LSX II is the easier speaker to get right.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.