My head unit is Sony XAV-601BT. As long as you're not expecting to use Mirrorlink since only a few phones have that, I think it's a great unit.
It's one of very few double din with detachable face, better security for a convertible.
It's running Android (though you can't do anything else) so it shows up my Mp3 song with Unicode tags just fine (tried JVC and Pioneer, they didn't show Asian Unicode tags in some of my songs) 3D Menu is smooth, display quality is much better than another Pioneer AVH-6300BT I'm using.
I used the Axxess CHTO-013 with ASWC-1. Because the CHTO has front and back audio out, front and back fading is working fine.
The ASWC-1 steering wheel module cannot detect the VR and Phone buttons.
Want to confirm that's the way it is with people who're using PAC module? I think those buttons are hooked to the U-Connect only.