I am looking for my first Mac. I'd really like to go all out, but the loaded 15" rMBP is out of my budget. I don't play games. I use Adobe CC for editing photos and medium graphics work. I would like to use Premiere when I need to for short films (HD quality), but it wouldn't be something I use every day. I can afford the base 15" rMBP or should I look for a previous gen rMBP with 16gb/500gb ssd/650M for about the same?