TBF, I never had an issue with my old Alpine HU (just a basic CD player at the time) and the only issues I had with my Pioneer (slide-out 1DIN) was the clip to hold the removable face on broke off after a couple of years (taped it on permanent after that
) and then a year or so ago (was in my SRT, sold it though) a tooth in the gear broke so there was some clicking.
Everything sound- & touch-screen-wise worked perfect though.