As the first substantially redesigned version of the On Stage in years, JBL's new On Stage 200ID ($150) is the second official "Works with iPhone" speaker on the market, and the most affordable. Capable of performing interference-free music from the iPhone and also Dock Connector-equipped iPods, On Stage 200ID is the family's first to use fabric speaker grilles, and preserves top-mounted volume controls and a rear power button. The system features…