only problem with the AEM lately is that units are coming dead from the box and faulty, stick with Haltech (my personal favorite), some guys like to run canned tunes or ROM tunes or whatever they like to call it but I personally stay away from them
Depends on what you are planning on doing with the car?
If it's going to be a monster then go with something that's worth the money HALTECH
but if you're planning on pushing no more than 400 WHP and keep things stock-ish then no need to fork out that much cash and go with something cheaper such as AEM or Power FC
Other options include Nistune
It all comes down to who tunes the engine, pick your tuner first and then use what he is most skilled at since you are not the one tuning it
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