Hello, new to the forum, 2nd time Macbook user in a bit of a dilemma. I have spent the past few days searching this forum and others on the topic, but have yet to have found a conclusive answer. First things first: Currently 4 days into my 14 day cool-off/return period after purchasing a 13" MBP retina i5, 256, 8gb. USES: General browsing, streaming, etc. But also will be working with 24mb RAW photos & JPEG editing in apps such as Lightroom & photoshop. Possibly some gaming too. I wont be doing heavy video editing, but would like to work with 5+ minute 720-1080p clips editing and adding music, etc. It'll cost me £150 in total (including travel & upgrade) to return the MBP and get the i7. But I'm concerned about a few things: 1. Battery & heat: What is the score on this? Is it noticeably affected by the i7 as opposed to the i5? I'm talking general use, Ive read the i7 runs at higher frequencies regardless. Battery is an important factor since I travel with work, to move to something noticeably less wouldnt be good. 2. Performance: Am I likely to really notice the change? I dont mind video/photo editing taking slightly longer, but I dont want to be limited to the point that everything freezes up and crashes (like with my old cMBP, 4gb, i3). I have heard people say that the difference is minimal unless you're a HEAVY user. What qualifies as a heavy user? 3. vs Maxed out Air: My original purchase was going to be an 11" 2013 Air, 8gb, 256-5gb, i7. How would the i5 pro compare? Im I getting the same performance as I wouldve? (this would help ease my stress as I would simply look at the i7 as an upgrade I wouldnt have missed) 3. Is it worth it? I'm telling myself to be happy with what I have. This is the best machine Ive ever used so far. But I dont want to come to next year and wish I'd just forked out the extra. But then I could say the same about the Quad core 15" too (that might be my next dilemma if I fork out for the i7!!). I COULD go and get the i7 this weekend. But it just means I have to travel to get it, take extra care not to do too much with the one I have (just incase of damage, etc) and I couldve done with the extra cash this weekend for other things. Is the i5 going to hold me back or is it a good, lasting all-rounder? Will this be enough for photo editing the size files Im going to be working with? And what is the verdict on the extra power consumption? Thank you all in advance!