I say RF out of the two. Really it depends what type of sound your are going for. I personally am not a fan of Alpine speakers. They do not carry the high ranges very well and are overly bassie. They seem to make the door vibrate more than anything else. And thats garbage. To me clarity is important. I have Bostons and with the upgraded HU the change in quality is amazing. Seriously. Just upgrading the speakers and ID will prove wonders. I would do that and then see how it sounds. Going mod by mod will make you appreciate how the sound quality improves with each item.