I am looking into getting a new Macbook Pro (hopefully they'll have late 2013 models). I currently use my early 2011 Macbook for iOS app programming and light graphic design work with Pixelmator. I can't remember when, but I think when I upgraded to Mountain Lion all programs now take a little longer (too long, imo) to launch.
For future reference, I was wondering what affects app launch times the most? Is it the processor, RAM or hard drive/SSD? Right now my Macbook's got 2.4Ghz Core 2 Duo, 8GB DDR3 and a 250GB hard drive.