I have the Airaid and I love it. I think it really improves the underhood look of the engine bay. More performance...I seriously doubt that it does. I would buy the Airaid again. Here's my reasons, first they were the first ones to make a kit for the SHO (reasonably priced) and they were very supportive of the new SHO and their customer service was super. They did have a rep who was active on one of the SHO site's and really went above and beyond to help us early purchasers with the CAI. However, I really love the intake bpd has and would consider one, since I believe that really does improve the performance and looks great. But until one like that is available as a kit, I'm real happy with the Airaid...good quality, good customer service and support, and after being dissed by K&N when their filter failed, I'm really quite pleased with Airaid.