Among the current production Cadillacs which are the most collectible? I think there are very obvious choices, like the XLR-V and STS-V. The XLR and XLR-V because of their very low production numbers and hardtop convertible are naturals for collectors. The STS-V is my personal pick for most underappreciated vehicle Cadillac makes today. With a supercharged, 4.4L Northstar making 469hp, it is a jewel of a vehicle. Think professional athelete in a finely tailored Italian suit.
The new 556hp CTS-V will likewise be a very collectible car when we look back a decade or two down the road. Power, handling, looks, luxury, it has it all. But I think the STS-V or the XLR-V would be my picks for most overlooked and most likely to be treasured a decade from now.
To me that is one of the interesting facets of collector cars — sometimes it is just finally having the ability to own a car you lusted after as a teen or young adult. But other times I think it is the ability to appreciate a car that does a really excellent job of the task it was designed for. And to me, the STS-V meets that criteria best. It is an executive sedan with huge power, exquisite manners, and no compromises.