CTS-V vs. CTS Premium
 

So I'm in the market for a used CTS. I can't decide wether to get an '09-'12 CTS-V with around 60k miles or a '13-'15 CTS Premium with 15k miles. I'm finding both for similar prices. I love the mean growl of the V8 along with the raw power but I've noticed that the 3.6 V6 in the premium does a pretty good job of throwing its weight. Is the newer body style of the CTS worth getting the Premium or is the V just that unbeatable? Opinions are welcomed along with anyone's raw data or experiences. Thanks!!!