Siblings in Revel's Architectural series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
|---|
| Amplifier needs | evenly matched | Similar sensitivity (91dB vs 90dB) - both want much the same power. |
| Headroom | evenly matched | Similar power handling (130W vs 150W). |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Type | depends | A Passive In-wall against a Passive Center Channel - a different job rather than a better one. |
| Price | B | Revel W553L is cheaper - $545 against $660, about 17% less. |
A Revel W253L B Revel W553L
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.
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.