I can't say whats happened over the years but I did just replace a 9830 with an eclipse 5435. The SQ to me is a little better with my eclipse, but the big difference is that the eclipse sounds really good set flat, right out of the box. My 9830 took a lot of tweaking to get good and none of the factory preset eq curves were any good at all. I thought it was just the acoustics of my ride, until the 5435 sounded so good set flat. So IMO the alpine I had was OK, but I'll look elsewhere next time I'm in the market for a HU.