Now I will state that I love Porsche for certain models. I mean the wife and I have a couple of Cayenne Turbos for daily driving, and out of all the daily drivers we have ever had, they are by far and away the best over Range Rovers, Fords, Jeeps, etc.. For everyday use, I could not picture us in anything else as they are very smooth, very well built and just rock solid in quality.
Now stating that, I do have to say that I took a very, very serious look at the new 911s (base up to Turbo and the GT series), the Cayman, the Boxster, etc. and I have to say that I was thouroughly disappointed in the Porsche cars. Cheap and just Mickey Mouse style of car. There was no real luxury and the quality for the price, just was not there at all. I can honestly say that I will not be owning a Porsche car anytime soon, with the exception of the new Panamerica. I am intrigued with that car and will take a serious look once one of our Cayenne's comes of warranty. even then though, I am looking at the luxury aspect, not the pure performance aspects.
In my mind, you are looking at two totally different vehicles and if you are looking for a daily driver, one that does not pound the hell out of your kidneys, etc. you are not looking at either car. Daily drivers are meant to be smooth, soft riding with decent gas mileage. Want a good daily driver, then buy a Lexus or an Infinity or an Audi. You will not regret it. Hell even a Lincoln MKX SUV is a very well built vehicle.
As far as Porsche cars, I honestly don't see why anyone buys any of them 911 or Boxster varients. The Cayennes I can fully understand having owned two for some time now, and been very impressed but the cars are cheap and gimicky for the cost. Honestly, ranking up there with some of the worst vehicles out there when comparing cost versus what you really get.
Anyway, like others, it is just my opinion and I do understand it is rather harsh, but after being blown away with the Cayennes we have, I have to say that I was extremely let down by the Porsche cars when I started to look at them.