I need a PA system for a workout class. Room is approx 1500 sqft. Class contains 50 or so. My budget is really $200 or less. I was looking at the Ion Audio Block Rocker Portable PA with iPod Docking, Behringer B205D Eurolive Powered PA System (150 Watts), Alesis TransActive Mobile PA System with iPod Dock, and Roland CM30 Cube Monitor (30 Watts, 1x6.5 in.). Or any other suggestions. Please help!