My old Windows laptop died and when I looked at the rMBP, I really like it. But.. i'm a Windows user since ever. So there are some doubts offcourse, why should I spend a few hunderds euro more on a rMBP then a comparable Windows ultrabook. I'm using mainly Adobe LR4 and Photoshop/ Premiere Elements 11. I have a DSLR which creates 30Mb large RAW files and HD moviefiles. I'm not a pro photographer but won't like it if editing the pictures is slow on such a Macbook. Is it a joy to use those apps on a rMBP and which cpu would you advise? The i7 is 200 euro more expensive. Is it's performance increase noticable and worth the upgrade? What about music? I'm a hobby musician and consider also to use it as an audio workstation.