Looks like it's been a while (click) since anybody addressed this, and I'd like input on sub $200 OBDII code readers. Which features are important and which models should be avoided? And what is the difference between a simple "code reader" and a full-fledged scanner?

I've had CE lights come on in my various cars four times in six months and it might be time to get a reader/scanner. I know Auto Zone offers to read the codes but there's also the implied obligation to get your parts there. I want more flexibility than that.

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2003 Hyundai Santa Fe, Silver
1999 C280 Sport, Black
1997 Ford Escort, Toreador Red