Bought my 2014 and never looked back.
Also, when there's a complete redesign of a car, the first year is usually the worst because they're still working out the kinks and then eventually re-release a revised version 1-2 years later.
The 2005 corvette was a perfect example, damn thing had electrical gremlins and BAD ones. They fixed them in the 2006+ models but everyone with an 05 was screwed.
Looks wise I say the 13-14 its just my opinion, I sat in the 15 and looked it over quite abit, it still didnt grab me like the one I have. I wasnt wowed either by the front end of it.
While I agree with this statement, I don't think the 15 mustang will be that much different mechanically from the previous generation with the exception of IRS. I wouldn't be worrying about any gremlins if I were interested in picking up a 15 mustang.
With that said tho, I'm thinking besides the IRS that there won't be that much difference in the previous generation and the new one except for a few more horses picked up and possible a few pounds lost. Keep in mind too that Ford stated there will be a price increase on mustangs. I'm wondering how much they will up the price tag
There might not be a huge difference mechanically but it could be a repeat of 2010-2011 where the 2010's came with the 3v in the new body then all of the sudden they released the coyote the next year and left 2010 owners cursing at the sky lol