I am selling my 2010 for a 2014 1LE, I like the new front and hood, the hood vent looks good with the matte black hood. But I am ordering Recaro seats so the 2013 isn't an option for me and it sounds like they are not for you either. I also like that the 24 gets the ZL1 rear spoiler now.
What price did you negotiate for the 2014? I would try to get a better price for the 14. Also, look at Pentegon Federal Credit union, you can save money on monthly payments. Loans are 1.49% or 0.74% with Chevy dealers in their program. That will save you $600 over 5 years.