The 5 Freeway and the Jamboree extension to the 261 tollway are two completely different animals. The 5 Freeway is a major traffic artery with what 6 lanes each direction and a large amount of truck traffic - pretty much 24/7 sound and pollution. We didn't buy in Cypress Village because any part of the village was too close to the freeway. Standing outside of the Laurel models was just too loud. The Jamboree extension is only two lanes with almost no truck traffic and is really pretty quiet outside of the morning and afternoon rush hour. And there are no off-ramps from the 5 Freeway to the Jamboree extension. That being said, I think if you are buying into a luxury high-end community, freeway noise should be minimal.