No single best speaker here - they are built to different priorities, and the right one depends on your room, your sources and what you listen to.
| Area | Better | Why |
|---|
| Bass | evenly matched | Much the same reach (60Hz vs 60Hz). |
| Built-in power | A | Cambridge Audio L R S has the bigger amplifier (100W vs 70W RMS). |
| Connections | A | Cambridge Audio L R S adds digital inputs. |
| Size | depends | Kanto ORA4 is easier to place; Cambridge Audio L R S is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | Cambridge Audio L R S: a sub output; Kanto ORA4: a sub output. |
| Price | B | Kanto ORA4 is cheaper - $399 against $549, about 27% less. |
A Cambridge Audio L R S B Kanto ORA4
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?
The usual trade-off: Cambridge Audio L R S measures better, Kanto ORA4 costs about about 38% more% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. In a large or open-plan room, Cambridge Audio L R S has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Kanto ORA4 is the easier speaker to get right. Think about the whole system, not just the speakers: the roughly $150 saved by taking the cheaper pair would buy a subwoofer or a better amplifier, and either usually does more for the sound than the difference between these two.
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.