Saturn's aren't junk cars, they're just underrated/under appreciated thanks to Chevrolet.
Saturn Aura was the 2007 North American Car of the Year. The Saturn Vue has very good reviews, and the Saturn Outlook does too.
The reason for Saturn's downfall is because ever since its release it's always had an identity crisis. And ever since Pontiac stopped selling the Firebird, the too had an identity crisis. That's why they are both going to auto brand heaven.
As for Sky vs Solstice. They are essentially the same. But IMO the Sky has a much nicer looking front end than the Solstice.