I have had MacBook Pros since 2004, upgrading about every 3 years. My current one is a 2012 MacBook Pro Retina with 500gb solid state drive. I really love it, although would do a couple things differently.
1) In the past, I always opted for the matte screen. This time, I got an open box item from Best Buy... a great deal, but I don't love the glossy screen quite as much as my matte screen. The matte screens are only available from Apple directly, so there was no getting a deal on it. In the future, though, I'd probably insist on the matte. The matte used to be cheaper than glossy, but not it costs extra.
2) Retina screen... There's no denying retina screens are beautiful when viewing photos and images. However, the biggest frustration I have with it is that in Photoshop, everything is really tiny. It displays everything at actual pixel size. An if you zoom in, things look terrible. Now, if you are working on high resolution, super quality stuff, it's not a big deal, but if you do any work on web-sized graphics, it's a really bad idea. So, I have to set the resolution of my monitor down a setting or two just for my Photoshop work.
3) The solid state drive is too small for me. I ABSOLUTELY LOVE the solid state. The speed is exponentially faster. But, because the laptops cannot do the super drives that have a solid state along size a larger storage spinning drive, you can only get a smaller solid state. I think the 500gb was the max I could buy at the time. If they offer a bigger drive now, I'd definitely upgrade it. I do have a 500gb external that I keep my scrapbooking supplies on, but it is a pain to have to drag it out all the time. And, even with that, I'm still constantly running at between 25-10 gb free. That's just not enough to run things smoothly. Things light photos, lightroom catalog and iphone/ipad apps stored in iTunes really kill my space.
4) There is no CD/DVD drive, so if that's a need, you'd want to pick up an external CD/DVD drive.
That said, I love my laptop. I have a 15" and it's wonderful. It's so light, thin and powerful.The only problem I have consistenly had with my macbooks is that the power adapters almost always fail right after the warranty is up. They tend to fray and they are expensive. $80-$100 to replace. If your older laptop had a mag 2 power adapter, be sure to save it if you can so you have a backup. I haven't had any issues with my display or any reason to take mine in to be fixed so far.
I hope this helps! Let us know what you decide to go with. I know you'll love it, no matter what you decide.