before this i had the stock HU in my 06 jeep and obviously theres a major difference...my highs are clearer, and the gains can now be up to where they should be with the added SQ on the sub. The ipod controls are flawless, its great to be able to have that in your glove box and have thousands of songs right there which you can update daily...(i would never feel like burning a new CD every time i download a new song, much rather throw it on an IPOD and bring it in the car)
so far havent found anything wrong with it really....of course im still pretty new at this car audio game, i didnt really find it necessary to buy a HU with tons of tuning features because i am not that experienced yet and wouldnt be able to do it right. As i continue to learn i will one day upgrade as is the case with everything..