As above I'm considering selling my own columbus which has v8 maps and the latest 130x firmware. Also have can gateway to stop battery drain and voice control lead and mic. So what would be a realistic price to ask for?

Also have surround sound for columbus and code

Probably £450-550 if it's a newer LED version.

I'm sure you'd want to sell it all together, but if you need to split it then I'd be interested in the mic & cable.

Should be pretty easy to sell as a package though.

It's not the led version.

Then £400 to 500 probably.

how can you tell if its an led model as ive just bought one

Does it have a * button or does it have a i button top left corner next to cd slot

Think columbus is different its either i (LCD) or microphone looking symbol (LED)

Mine has a microphone and I bought it in the belief it is an LED screen, but I have no way of proving that it is.

Is there a visible difference in the screen (resolution, brightness, clarity, reflectiveness, etc.)?

Yes led is a bit brighter than the lcd but if yours has mic I'm certain its led

I believe so. I just never found any other way of checking...