The lease on my SUV expires in six months, and so I am researching new cars, including the Prius. This forum is an invaluable tool, because the information comes from you, the real users and owners, and not some corporate sales brochure. Here is what I've come up with so far, and I welcome any opinions, pro or con. I started at the top with the Prius V and all options, then asked myself "do I NEED this or WANT it." The first option I looked at was the ATP. Now, I've been driving for over 40 years, and I can parallel park with the best of them. When I am driving, I pay attention (no texting or holding cell phones, etc.), so I don't need my car to keep me from drifitng out of my lane. I use cruise control all the time, but I don't need the car to "take over" (applying brakes, etc.) if IT thinks I'm too close to the car in front. I suspect the ATP was developed for those folks who grew up multitasking and think they can talk, text, apply makeup, or whatever and still drive. Relying on your car to correct poor driving skills/habits is risky business, in my opinion. As a result, I decided ATP was not for me. Now, do I NEED foglights and 17" wheels, with slightly better handling at the expense of a harsher ride? 'Nuff said. Next up, leather heated seats. I've had them, but they didn't turn me into a convert. Cloth seats are just for me. Has anyone gotten cloth and wish they had sprung for leather? Then comes the infamous NAV system. It seems many of you have negative opinions about it (not accurate, etc.). I question the idea of spending $2,000 for something that my $200 portable one does very well. And, I can take it with me when I rent a car. Unless I hear a convincing argument to the contrary, NAV is a no-go. And a sunroof with a fan? Every sunroof I've ever had has leaked, and the noise overhead, even with the slider closed, outweighs any benefits. As for the fan cooling the interior? Not a big selling point for me. How long does it take for the car to cool down once you get in and roll down the windows? Seconds? A minute? Finally -- and this is both personal and practical -- I see no reason to pay for XM service. This would apply to any car, not just the Prius. I have a lifetime subscription to Sirius and intend to install my radio and car kit somewhere in the Prius. Has anyone done this? So, what I appear to be gravitating toward is a Prius III. It seems to have all I need, including Bluetooth. But, I am still open to ideas and can move up to a IV or V, if convinced. Thoughts, opinions?