Jl stuff is easy to sell back on ebay. As long I keep it in good condition i mite not even have anything in it when i go to sell it in the future considering i bought it used. Im certain it will still be worth at least 125 in a year from now. Plus it fits and is a solid amp IMO.

As far as chimes I havent lost anything. You may not be able to set and reset your info on the gauge cluster like miles per gallon, etc. but I havent messed with it yet. still tells the temp and stuff but im not gonna care really since the ipad can do everything it did, and do it better besides miles per gallon and maybe some other stuff i never look at. So far havent missed a thing except the volume and track selection on steering wheel.