I'm partial to the SRT, but never having driven an N/A I couldn't give an unbiased answer. I'm here in Az as well and there is a grey SRT on Craigslist that you can test drive. The N/A's are all over the place. So that wouldn't be too hard to find one to test drive.

It does come down to if you want extra power to play with occasionally. Originally I bought my car for it's sleek classy look. Then I discovered it's a beast in sheeps clothing. All depends on what you want to do with it. Mine has always been a third car, but even after sitting for a month runs perfectly every time. I will be putting mine up for sale sometime soon, still waiting on a few details on it's replacement.