I changed the HU with a Panasonic CD w/3preouts, I had for about a year in my legend before I moved it into my Type R. Need to replace it in the near future with Alpine or another name brand. I did change out all the speaker wire and added a cap to hopefully reduce the battery drain. I looked at the Alpine Type Rs, didn't like them, looked at the Kicker Solos, and a bunch of other speakers. I was going to go with all Polk Momo 6.5 in the doors, regular Polks in the rear seats and a Polk Momo 12 sub, but I was told the 6.5 wouldn't fit in the doors and the box the sub came in was not mounted properly so they were all recalled. I was going to use a 5 channel alpine amp with this set up. I ended up buying Boston Pro Series 6.5 in the doors, I think Boston RX in the rear and a Boston Pro Series 12 sub. I'm running it with a JL audio 5 channel amp (100wattsx2 to the front, 25wattsx2 to the rear, and 250watts to the sub, RMS) and as mentioned before with the Cap and new wiring. System sounds loud and clear. I didn't want the heavy bass that can be heard from miles away. With the windows closed you can hear the bass slightly and when you roll down the windows your can hear the highs and the bass from about a half block away. I spent a little more on this set up than what was planned but I am very satisfied. Whatever you go with get the extra auto insurance to cover if the system is stolen, its cheap and you can never be sure. It is also your money and your car so its your decision just do the research and find what you like that fits your budget.