First off, clean sound. Installing this head unit made it seem like I installed new speakers too. (I have a 6 speaker system from the factory)
Several preset equalizer options but you can customize to your taste. I frequently go back to the one called "Powerful" and that's where it stays now.
Bass is fantastic compared to my old unit. One of the first songs I played was Linkin Park's "Numb" and that first bass note was SWEEEET. Had no idea how much I was missing with my factory deck. Now I'm shopping for a subwoofer to augment this head unit.
Bluetooth with my phone works great. No more headsets or earpieces for me.
Mainly run my music off USB and this works great for me. My old unit had a 6 disk changer in it but even that was limiting. With USB, I have 20 CDs on the stick and it fits in my pocket. No more having to lock up the CDs when taking the car in for service.
I do miss my steering wheel controls but this head unit has a wireless remote so I've been using that instead. Frankly, I don't need either. It doesn't take long to memorize by feel where each of the buttons are on the head unit.
Wish I hadn't waited 15 years to upgrade. I never realized what I was missing until now.
Anyway, I'm enjoying car audio again!
(By the way, this was installed in a 2000 Toyota Sienna XLE and the install was literally, plug-and-play.)