Buick Topped the 3 year old quality list for JD powers.
Here is a new report out form JD powers:
http://www.theautochannel.com/news/2008/06/04/088953.html
The malibu and Silverado are both on the list. I think you will see more GM vehicles on there over the next few years as new models come out. The G8 is another good quailty car that I believe will be on there soon.
Consumer Reports rate cars on a different prespective than any auto enthusist that I know. They rate them like appliances. When Consumer reports give a good rating it doesn't mean the car drives well, it just means the car gets from point a to point b well. It doesn't mean the car has high comfort, it could ride like crap and be unconfortable. It doesn't mean it has all the newest options, it is going to have higher quality if it doesn't have new things on it, but that doesn't mean thats what you want. The car could be a PITA to repair and expensive when it does break down or the car could be easy to fix and cheap to fix, but that would get it a lower rating.
I'm not saying none of the cars they give a high rating to don't have any of those things, but I would not choose my car just on what they say. Talk to others that have the cars you like and see how they like them. See what problems they have with them. Drive them. They also don't rate them on there looks at all and that is important to me as well. I don't want some bland car like a Camry.
IMO most of us that buy Camaros (at least v8 ones) don't buy them for the same reason that consumer reports rates them. Also I doubt Consumer reports would ever give a V8 Camaro a good rating even if it was the most reliable car on the planet. Simply because it doesn't haul a lot of adults easy, It doesn't get 4cyl gas millage. Its not as roomy as other cars.
IMO most of us want a good performing car that is easy to work on, easy to get reliable power out of, handles good, Looks good, is upgradeble, has the options we want, and sounds good.
Its a plus if it is more roomy, gets better MPG, ETC but not the reason we buy the Camaro.