[Dadhawk]

There is a delay at start-up, but I think you are forgetting that most of the devices you are talking about working better are single function devices. They are remote speakers. The headunit allows control of the device which means there is more handshaking going on, etc. Also as it starts up it is potentially connecting to GPS, looking for satellites, etc.

In my several vehicles I have higher end Kenwood and Pioneer units in most. They basically all have some delay when you start the car, and all of them try to automatically play the last thing you were playing. The integration varies between the models but there is some "pain point" in every one.

That said, the '14 Scion Pioneer I have in my 86 probably is the worst of them in terms of connectivity. Overall, I think the headunit is underpowered (CPU wise) and that is the primary issue. Oddly enough it is the one where the voice recognition seems to work the best though.