The Maestros and Legacies use the same woofer (except for the rare Legacy III) and, I believe, the same tweeter. They use different crossovers and of course the Maestro has a midrange.
I have the Legacies and they are a great sounding speaker. I have never heard the Maestros but I am actively looking for a pair.
If I was in your place, I'd also get them both, refoam them, and keep the best, the other I'd consider selling but would be tempted to keep them and use them as B speakers.
Btw... Which Legacy? There are 3 versions. I have the Legacy 1s (tweeter is wider than it is tall). There is not much difference between the 1s and the Legacy 2s (same cabinet but the tweeter is taller than wide), they sound the same. The rarest Legacy is the 3. This can be easily identified by a switch on the back selecting 6 or 8 ohm operation. The case is also taller, like a mid height tower. The woofer uses a dual voice coil and (so I've heard) does change the voicing of the speaker when selecting between 6 and 8 ohms. If I can find a 3 locally, that is also on my wish list.