Hi guys, I'm new to the forum and have seen this question answered a lot, but I would really like a personal answer, so I'm going to ask it again . A couple days ago I ordered the 13" MacBook Air with the 8GB RAM upgrade and a standard 128GB SSD, but for only $150 more (with the education discount and recent price drop), I realized I could now have got the entry level 13" Retina MacBook Pro. I plan to use my new MacBook for simple college tasks (Pages, email, internet) and the one thing that would ruin my experience with it would be UI lag in fairly mundane tasks - a reported issue for the Retina, which is why I chose the Air in the end. But now I am starting to wonder if this Retina lag will be resolved in future software updates, and am wondering if I made the right choice in selecting the MacBook Air. Would Retina MacBook Pro users be able to comment on their experiences with their product? I'm mainly curious as to how it would handle fairly simple tasks (lag is unacceptable for Apple ), and if it can handle mild CAD work at such a high resolution (I will be studying engineering at college). I will check back here tomorrow morning, and perhaps head round to the Apple Store to change my order depending on the responses . Thanks in advance.