This looks interesting. I haven't seen it before.
My 2006 SRi Turbo doesn't have the MP3 one and I don't have AUX as well so it wouldn't work in mine.
I think the main thing with going Pioneer or Alpine is how many of the car functions would you lose such as access to menus etc. I know you can get an adaptor to keep the steering controls working.
The other option is to look at ones that were made specifically for these cars such as the VXMMI, Eonon and Zenec but these are now quite old and some are not available anymore.
I have also seen some Android ones which are supposed to be car specific as well and offer things like 4G and WiFi. There was a thread not long ago about one but the person never got back to say how well it was working for them.