hello mate, as others have said, they are a doddle to fit. i've routed the ipod ca ble in the compartment by the handbrake no problem. as for bluetooth, there is a mic with my kit which i've fitted by the visors.
the steering wheel control module just cost that much, you can get away from it if you want them. but like i said in my other thread, i didnt think they were that important just that if you were particular about having buttons that dont work.
hope that helps