Surely agreed value is for older cars where the the value is difficult to assess.
I think there are a few relatively new cars that would benefit from an agreed value - the Ford GT (for example) is now worth around 3 times the list price. The GT3RS 4.0 is another one where the price has rocketed.
Over the years I have insured cars on an agreed value with pretty much my valuation being accepted. Haven't made a claim yet (touch wood).
