i have spoken to a few ppl who work at car audio stores. they claim that alpine is "rolex" while all others are just "timex." they claim alpine is the best when it comes to sound quality and they are very pricey for that reason. they also claim that their internal parts are also of highest quality. how do we know for sure? alpine always believed in simplicity and thats why they dont have too much of those flashy displays and just simple LCDs. they used be be all built in japan but now some of the lower end models are made in china. but all the high end stuff are still made in japan. anyone agree with any or all of these comments?