I like my Actron PocketScan. If you're patient, you can find one for ~$30 or so. It does all the read/erase functions. Looking on eBay (where I bought mine) I see some other brands plus unbranded models from China. They should work as well. A tough, rugged case is probably the most useful quality for a scanner. As you pay more money, you get additonal "features" - like explanations of the codes, etc. If you pay enough extra, you get a free log-in to Danica Patrick's website ;-)Any advice for a low budget scanning tool that works on for an 03 Forester?