I bought a reader w/ all the connectors that has capbility to update from and download to a laptop. I've used on my '09 4500 to rread and reset a code and my wife's to read reset a code on her '03. I'm in for the evening and can give you the make/model tomorrow.
I can't say which reader is best because I don't know anyone else who has bought/used them. I like min the instructions are simple, the keys are big and logically labled and the display is sharp w/ easy to read text. It' mad for us old guys! :-laf
Here's what I did to find mine: I googled "OBD II Reader" or "OBD II Diangnostic Scanner", then campared features and prices acroos the spectrum and found the one or two I liked. I copied make/mode of those two, then google them separeately and narroed it doen to this order: Best Festures, Best Price w/ shipping. This is where there is some wiggle. No haggle, no sale! Yous should become very knowledable about scanners in a day or two. Please share w/ us what you decide.
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Finally, If you don't need to do different vehciles, I'd recommend a Smarty. I have one on the 4500 and I really like it. I have an opinion about sharing applications on other vehicles... you hope it don't get locked onto a frineds vehcle. I believe each time you download, there is an opportunity for a software glitch or hardware problem. Just an option.
Yous can check the vendors on the TDR to find who may sell them... just ask how much somehting is first, then after you get a quote, work w/ that number to get better price (including sshipping).
Long answer to a short question, hugh?
Take care and kep us informed.
Wiredawg