I was running an LC6, which is a line converter but have just switched to a head unit. IMO the difference is night and day, not all of it has to do with sound quality though. Yes the sound quality is better mainly in my case, I have better and more bass. The main difference is the options a head unit gives you in the form of tuning.. The ICC unit has just the basics but with my alpine head unit, its awsome I can fiddle with all sorts of things and tweak it however I see fit. Also I can now play mp3's and connect my ipod which now lives in my glove box and I control it through the headunit. Its not a pain running everything through a line converter, but get a good one. I tried a cheap $50 alpine one which was poo. Read good reviews on the forum about the LC6 so I got one of them. I paid $240 which did a good job. There are better ones of course, for example Alpine have one for around $800, and after speaking to the guy about it its ment to be the best out.. I too wanted to keep the standard look of my interior, but the way my head unit is installed, it doesnt look out of place IMO. I dunno about the sound deadening but I wanna be doing some aswell, so I look foward to reading someone who knows' answer.. Heres a link to the thread I started, its got pics and a bit of info too, if you wanna head down the head unit path.. http://www.fordxr6turbo.com/forum/index.php?showtopic=53255 Cheers Mike