My first car was a '95 Roadmaster Limited Sedan. Dark Cherry Metallic with the burgundy leather interior. It rode softer than a Marauder and wasn't nearly as involving to drive. With the Roadmaster, you just point it at the horizon and watch the miles go by. The most fun thing about owning an LT1 Roadmaster at 17 years old is that everyone thinks you've just inherited grandma's car but I did have one of the quicker cars in my high school's parking lot. I used to love to do burnouts at every available opportunity. The wide-eyed stares I used to get from passers by was always fun, along with the shocked expressions I'd get from passengers upon their first WOT experience.
I loved the LT1's power. Stock for stock, an LT1 will eat a Marauder....out of the hole. As the speeds increase, the Marauder's acceleration will walk away from an LT1. The Marauder however, gets much better mileage and is a lot more fun to drive, with much better roadholding and a much sportier feel.
I also think their design is an "acquired" taste. I didn't think it was awful looking, but it wasn't as nice looking as a lot of it's competitors.