In theory one of the tradeoffs of the gentle first-order crossovers used by Vandersteen is reduced power handling.
If you've blown every speaker you've had once or twice, I suggest that you'll save money in the long run by going with speakers that use prosound components. This means stepping outside of mainstream home audio, but the combination of higher efficiency and higher power handling makes such speakers far more survivable in a challenging application. You might look at Klipsch Heritage series, PiSpeakers, GedLee, and Tyler Acoustics' Pro Dynamics line. The PiSpeakers 3Pi at $1700 a pair is a real good starting point.
Duke
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