All the products you have listed are of excellent quality.
I personally am using the AudioControl LC6 in my vehicle (always have). These products are worth the buck as they allow you to extend the capabilities of you ICE without have to mutilate your beautifully integrated in-dash head unit and information display/multi-function steering wheel.
The RF360 is a beautiful piece of equipment. However, here in SA we find the AudioControl products to be a tad bit cheaper and still get the job done just as well.
The LC6 also provides a high quality clean signal to your amplifier which is stable up to 9 volt RMS.
Go for it!!!
