There's a boatload of code scanners to choose from so the question one might ask is: "Which one?"  The answer, after two days of research and a follow-up day of research after ordering this unit, in the short, this one.  Why?  Because it hits the middle ground between price and features smartly.First things first, all of the units I checked out had many various negative reviews.  To me, negative reviews are very telling as what to expect.  The point, all the code checkers have negative reviews, not just this one.  I let negative reviews be my guide to the positive reviews, not the other way around.Second:  Over the last few days, I've had several contacts with SPX's (Actron) customer service to ask sales and tech related questions before buying.  My experience, to a one, each interaction was a positive one.  A positive consumer attitude might have something to do with this point as the folks answering the phones are human also.Third:  I asked a customer service rep about warranty issues regarding online Amazon receipts and was told there's no problem with warranty returns using an online Amazon receipt.Fourth:  I asked about available software compatible with Win 7/64 and was told that Win 7/64 software was expected a couple of months out.  Time will tell on that point.  If you're XP/2000/Vista, 32bit compliant, you'll be good to go.(As of 14SEP2011, Win 7/64 drivers ARE available)actron.com/downloads/Fifth:  I easily scanned, found and corrected (erased) the error code which caused me to buy this unit in the first place; 2000, Dodge Durango.Details:  The quick start manual is quick and dirty.  I was up and running in minutes, not hours.............Batteries are not included.  You'll need four AAA batteries on stand-by if you want to use this unit immediately on arrival.............The comprehensive, downloadable manual (pdf) is a hundred and eighteen pages.  Wow!............The unit scans many vehicles for Anti-lock Brake System (ABS) error codes.............The unit comes with a six foot tether that's easily connected/disconnected but it don't come with no case.  Bummer.  Of course, for seventeen additional dollars plus shipping, you can buy a soft case from SPX.  But they're currently out of stock.  I used an available case I had hanging around the house to give this unit the protection a piece of high-tech gear of this kind deserves.  Works great and saves money.  The six foot tether is long enough so one can use the unit while sitting in the driver's seat.  The code scanner a past mechanic used, had a two foot pigtail and he was stuck under the steering column on a hot sweaty day with me feeling guilty as if I were abusing my mechanic...........You can't download and install available software (Scanning Suite) if you're running Win 7/64.  Double bummer...........Restating, not compatible with Win 7/64.  Supposedly compatible with 32bit OS such as XP, 2000 or Vista.  I write supposedly as I haven't check out compatibility issues with any 32 bit OS's...........Unit looks good so it has a high cool factor...........I recommend getting an inexpensive copy ofOBD-II & ELECTRONIC ENGINE MANAGEMENT SYSTEMS TECHBOOK (Haynes Techbook)to augment this piece of gear's instruction set...........I also, recommend getting a Cable Extension, J1962m to J1962f, 15ft (144203) if you're wanting to scan from the engine compartment.  I ordered one that arrived today.If you're wanting a code scanner to keep you away from mechanic/dealership pricing, that hits the middle ground between being a full featured unit that's not, by comparison, overly priced (yes, this is a bit of a pricy unit), my opinion, this is the unit you want.  Remember to offset the price of this unit against legitimate mechanic fees (they have to pay their utility bills also) and the convenience of being able to scan, clear and correct error codes yourself via parts replacement.  And if you let friends and family members know you have one of these babies, your popularity index will immediately go through the roof.A final thought, if going on a roadtrip, I highly recommend throwing this unit into your bugout bag as when the "check engine" light comes on, you won't have to worry about what the light is trying to tell you as you can immediately pull over and find out what's up.  Very cool.Hope the above helps.