I'm looking at some new Alpine units to replace my current Sony. It's about 4-5 years old, works fine.. but I'm looking to replace it mainly because the AUX IN isn't really an AUX IN. It's only and AUX IN for sony unilink devices.

I can see why sony would choose to disable this port unless a unilink device was present, simply to get you to buy more sony stuff. However from an end consumer point of view this is a problem. Do Alpine HU's suffer from this "problem"?

Or are there any other kinds that just have an AUX input that I can switch to?