I'm sure a 13" rMBP will be fine but honestly the 2" extra on my 15" make a lot of difference to me. I work mostly with a TB cinema display but when I can't, every extra inch of real estate matters. Not sure but it sounds like from the comments that the 15" has a separate GPU, which seems right to me. So worth it for serious graphic crunching.
Also, it goes a little without saying that if you're a maker, then you care about your tools. And expert makers want the best tools they can get, and Apple laptops are the best tools you can get. Build quality, software, *NIX environment, durability, resale value -- from any metric you look at, it's the best tool you can buy for designing or programming.
Still need a Windows legacy app? Fire up a VM and you're golden.
I'm sure a 13" rMBP will be fine but honestly the 2" extra on my 15" make a lot of difference to me. I work mostly with a TB cinema display but when I can't, every extra inch of real estate matters. Not sure but it sounds like from the comments that the 15" has a separate GPU, which seems right to me. So worth it for serious graphic crunching.
Also, it goes a little without saying that if you're a maker, then you care about your tools. And expert makers want the best tools they can get, and Apple laptops are the best tools you can get. Build quality, software, *NIX environment, durability, resale value -- from any metric you look at, it's the best tool you can buy for designing or programming.
Still need a Windows legacy app? Fire up a VM and you're golden.