I have searched across various AV installers in the dallas metoplex for non BMW dual rear seat options and found that the less expensive system is the BMW system by few dollars. Furthermore it comes with the factory matching warranty. Most dealers offer a 15% discount on parts and labor that bring the price down. I'm servicing my other BMW with a specific dealer in the dallas area for the last 5 years and that also helped in getting a good price along with the 15% discount. Thought it'll be a bad idea to not have the sound routed through the speakers but using it for the last week or more convinced me that there is a reason why BMW chose to only let audio heard through headphones. While the kids are enjoying the movies, I'm able to listen to songs from IPod or SAT radio as usual. Another huge difference from my perspective is the tilt angle on these monitors. Rosen and Vizuallogic cant come close to this.