jms: It's more the case that the Iyonix *does* have the air-con, and electric (front) windows, and cruise control and remote central locking. These are standard features (USB, networking, DHCP?) that some other cars are only just getting.
The Iyonix also has the large engine, obviously.
The Iyonix arguably *doesn't* have the shiny R18 alloy wheels, the racing stripes, and the ten-CD autochanger as standard. Maybe Castle's PANTHER pc is the racing stripes one.
If your current car has a GPS navigation system, and you use it all the time, then you *definitely* don't want to do without something similar in your next car. Is there anything that is similarly vital in your Select software, that isn't provided with the Iyonix? i.e., can you be specific?