I never had any trouble with any alpine and I have never seen their build quality go down such as pioneer's have over the years.
OP, as a audio guy I highly do not recommend BT audio. Using a Aux input would give you much better sound quality over BT streaming. However the connivence factor does take a hit. I know what you mean with them not having the major support for newer devices in the BT market. However alpine really caters more towards the "I" market rather than android. BT is not something they even care for themselves being that the compression ration is so high.
If you MUST have BT streaming I recommend going with kenwood. However keep in mind your KBPS is going to drop. Take a look at these two articles.
Bluetooth audio quality (A2DP) - News - SoundExpert
Bluetooth audio vs. wires | The Audiophiliac - CNET News