I'm sorry that someone maligned your beloved Mach 1's. Get over it. If you like them that's your business. Yes, they play quite loud on only a few Watt's. If volume is what you want then they will satisfy you.
Many audiophiles feel differently because we want good sound to go along with high volume. Frankly, Mach 1's don't really sound all that good. As far as high volumes are concerned my ESL's are rated to produce 110db at 10 feet in a 15' x 22' x 8' room. Of course they need a lot of Watt's to do so, but 110db should be loud enough for anyone. It's certainly loud enough for me. Plus, my stats sound really good!!!!!

BTW:
Welcome to AR.