I've been searching around the site trying to decide which of these two is the better choice for me, but i haven't really found what i was looking for. i want to be able to connect my iphone through aux and also through the iphone plug. while plugged into the iphone plug i would like to be able to use the steering wheel controls to skip songs. i heard that the iSimple iSNI571 reduces the volume, and that you have to switch setting on the device itself in order to use the aux input, and i was wondering if these are true. any input is helpful, thanks. oh, and my car is a 2004 g35 sedan with bose stereo, and a sat button.

 

after more research i also found this :http://www.gromaudio.com/store/usb_a...interface.html, anyone try this one? the usb support could be nice.