What I would suggest is drive a few of them. Both series 1 and 2 and in 2wd and awd, although series 1 you only have one option of awd.
After driving a few around, I have not made a decision on which is better, and perhaps there is no definitive answer. I love both the turbo and na versions, although I do own a turbo, I would still love to own an na. The torque you feel on the 3.5L donk is simply sensational as soon as you step on the gas. Obviously it runs out of puff up high.
Another point which may or may not be important to you is the how the Attesa works between the turbo and na cars. Turbos run on a hydraulic system while the NA's runs on a clutch setup. I don't know which system is better than the other. Perhaps they are very comparable to each other. I've felt how the series 2 Attesa works (the clutch system) and can't really notice the difference from the series 1 cars (hydraulics). They are both a pleasure to experience imo.
Good luck with it.