I am trying to decide whether to replace my factory radio with an iPod compatible aftermarket unit ($400+ to do it right) or whether to try the iSimple set up from Best Buy which intergrates the iPod into the factory unit. Has anyone used these on their factory set up? And if so, how is it working for you? The cost is only $139 installed so it seems like it might be worth it just to be able to get access to the 1200 songs on my iPod. Thanks!