i would like some feedback from you fellow Mac guys. I have the opportunity to upgrade my mid-2012 13" i7 2.9ghz to a mid-2012 15" i7 2.6ghz. I can trade mine in for the 15" with $300USD on top. What would you guys do if you were in my position? I use my laptop for work and personal, so it's constantly being moved. I am a Film producer so I use my laptop for basic documents, spreadsheets, emails, internet research, with occasional, Design, Video Editing and SFX (Adobe Premiere & After Effects, I also use Logic Pro X to create music. the 15" has 100 cycles on the battery and the exterior is near perfect minus slight scratches. Is this a good deal? upgrade worth it? Just want to be sure i am not getting ripped off.