2010 ss camaro or 05-08 Mustang GT?

Im really unsure what to do here. Ive always been a camaro guy. Right now I own a 98 z28. well i also love mustangs. i have to options here. I could save money for about 2years for a down payment and get a 2010 ss. or i can go to the dealer in a month or so and pick up a 2008 GT at the dealer ship and do payments on that. so what should i do? im not very good at making decisions by myself so this is why i ask lol