Im looking to purchase a tuner for my car, and have been doing a bunch of research via svtp search. I was originally looking at the SCT Livewire, but from what i've seen in most of the threads i've read, most people are unhappy with the Livewire, and suggest the Xcal II or 3. Does the livewire just not have properly tuned setups? Also, with the Xcal, does the tuner come with any tune's to start with before I take my car to the local motorsport shop for a custom tune? (from what I understand the Xcal II and 3 are custom tuneable) What is the difference between the Xcal II and 3? I'm not sure which i would want to go with.