Gotcha. I think I'm pretty set on the 8400. I want the removable face plate b/c I have a lot of money in my stereo and while its not going to stop anyone from breaking in my truck, I just like the idea that an expensive HU isn't out in the open. The price difference is only like $75-100. That feature to me is worth it. I think I'm just going to get a garmin and stick it to my windshield. I know its kinda cheesy but I don't use nav everyday so no big deal but I do need it for work. I read the nav add on for Pioneer units are terrible and they're like $350. I can get a garmin for like $150 with lifetime map updates. I wonder if you can use the cable to plug the garmin into the HU to read like a flash drive and have it display on the HU monitor? I'm so tired of researching and reading reviews LOL. I'm just ready to buy something and enjoy it at this point. Thanks again Nathan. You've been a tremendous help. Oh one last thing, you recommended the gmos-011. The installer I talked to suggested the gmos-04. Do you know if either are okay? I know both work with Bose and onstar so I wasn't sure of the difference except price.