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 | A | Genelec G Three digs deeper - 54Hz against 79Hz. |
| Built-in power | B | KEF LS50 Wireless has the bigger amplifier (230W vs 100W RMS). |
| Connections | B | KEF LS50 Wireless adds Bluetooth, Wi-Fi, streaming and digital inputs. |
| Size | depends | Genelec G Three is easier to place; KEF LS50 Wireless is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | B | KEF LS50 Wireless: a sub output. KEF LS50 Wireless sits in a wider range (10 models), so a matched surround system is easier later. |
| Price | A | Genelec G Three is cheaper - $1,390 against $2,200, about 37% less. |
A Genelec G Three B KEF LS50 Wireless
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: KEF LS50 Wireless measures better, Genelec G Three costs about about 58% 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. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 79Hz anyway, so judge these on the other rows instead. In a large or open-plan room, KEF LS50 Wireless has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Genelec G Three 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.