My favorite setup:
HK AVR 235.
Klipsch Quintet II's (with 2 extra sats)
Adire Audio Tumult in a b5 Cu. Ft passive raditor box powered by a QSC RMX 1850 HD. mmmmm, 1800 watts moving 5L of air.
You felt wind because of the ports. Porting an enclosure is a shortcut to creating more SPL. It's a tradeoff. More SPL=Less SQL. That saying "There is no replacement for displacement" applies to speakers too.
I HATE the all-in-one systems, esp. those boom box units that claim 500 W when they don't draw more than 2 amps. But if it sounds good to you, shit, go for it :P
Spiff, it's pritty easy to get winod from 500W of electricity, you just gota use it right.