To Keep or Trade??? XR8 for a Monaro??

[Falcon97]

We are ford fans from childhood, and my husband now has his dream car XR8 BA 2003. But now his thinking of trading it in for a Monaro......New version Monaro. He reasoning for this is he says the Monaro would be worth alot more in his retirement years to come over the XR8.... there were less Monaro's made.....and thinks they will become a rare thing .....
What do you guys think??? Never owned a HOLDEN!! But is there any general issues with the new version Monaro and is it worth the swap/trade. The XR only comes out on weekends, and so will the Monaro.....Not sure what to do??