An in-wall against a floor-standing. They are built for different places in a room, so start with where these have to go rather than which looks better on paper.
| Area | Better | Why |
|---|
| Bass | B | Monitor Audio Gold 500 6G digs deeper - 25Hz against 60Hz. |
| Amplifier needs | B | Monitor Audio Gold 500 6G is more sensitive (89dB vs 87dB), so it goes louder on the same amplifier. |
| Amplifier match | A | Monitor Audio W2M CP is the easier load at 6 ohms; the other is 4 ohms and wants an amplifier rated for it. |
| Type | depends | A Passive In-wall against a Passive Floor-standing - a different job rather than a better one. |
| Expandability | B | Monitor Audio Gold 500 6G: bi-amping. |
| Price | A | Monitor Audio W2M CP is cheaper - $2,758 against $8,299, about 67% less; arguably a different class. |
A Monitor Audio W2M CP B Monitor Audio Gold 500 6G
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: Monitor Audio Gold 500 6G measures better, Monitor Audio W2M CP costs about about 3x the price% 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 60Hz anyway, which makes the cheaper Monitor Audio W2M CP much easier to justify. If your amplifier is modest, vintage or valve-based, Monitor Audio Gold 500 6G is the safer partner - the other will want more current or more watts to sound its best.
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.