I bought these Savarez 540R Alliance strings upon Geoff Ferdón’s recommendation for a flamenco guitar on the site. And I must say, they are fantastic! Best sounding strings I've had on my flamenco.
I'm not a flamenco player, but rather a jazz/bossa nova player and, for me, flamenco guitars with their slightly higher tension and energy, treble bar and wood choices just sound better for jazz. Crispier, punchier and these Savarez strings just accentuate all of that. Plus they're considerably thinner than nylon, which is nice.
Should come as little surprise, though, since Savarez is probably the longest surviving string manufacturer still in existence (since 1700s!) -- and it shows.
Highly recommend these strings!