What do you plan on doing with it? Most code readers are pretty simple and only marginally helpful in fixing problems. Reading data, Bi-directional controls and flashing modules are all necessary nowadays. Access to OE info is vital as well- that is available in subscription form, many offer 1 day or short term access. Either an OE scanner-Best most accurate, expensive, steep learning curve. Next is the Autel Maxdas, the Snap-on scanners, there are many, check out their site Auto Enginuity is a good PC based unit. Beware about buying Scanners online, e-bay c-list etc. There are a LOT of clones from China out there. They look VERY close to the real thing, but will fail. One last note, ALL aftermarket scanners have holes in coverage and bugs, the OE stuff is limited to one make or group and some (Chrysler!) change their scanners frequently, with little or no overlap. Pick your poison.