If you decide to go the reflash rather than the stand alone or piggy back computer than Verso and ECUTek are your only options.

ECUTek is more expensive for the initial tune ( frigging license fees ) but does have interstate support if you might travel or move interstate with the car.

Verso supporters are more vocal on this site but the reality is the results are pretty much of a muchness. Talk to the guy who will be tuning it and go with the guy you feel most comfortable with.

I went ECUTek. My preference out of the two options you have is Lane from Race Torque. Steve from MMS does a good job to if you can get past his grumpy disposition.

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Stoner & Webber 2011 World Champions