Right now I am comparing three MacBook models: 11" MBA, 13" MBP, and 15" MBP 11" MacBook Air: -1.8 GHz Dual-Core i7 -4 GB RAM -256 GB Flash 13" MacBook Pro: -2.7 GHz Dual-Core i7 -8 GB RAM -256 GB Solid-State Drive 15" MacBook Pro: -2.2 GHz Quad-Core i7 -4GB RAM -256 GB Solid-State Drive -AMD Radeon HD 6750M I basically do five things with my current laptop (late 2009 MBA): take notes, write papers, browse the internet, watch movies, and play games. I know that all of my options can handle the first four just fine. It's the last one, (gaming) that I'm concerned about. Right now, my laptop just sits on a desk all day, but when I go back to college in the fall, I will need to carry it with me. I play mostly older games, such as Half Life, Half Life 2, Left 4 Dead, Portal, and StarCraft 2, but I want to be able to play Half Life 3 when it comes out (if it comes out). Also, I'm getting tired of having to turn the graphics all the way down and still getting bad frame rates with my crappy NVIDIA 9400m GPU. I want to make sure I can play these games smoothly on minimum settings. It would be nice if I could play them on high settings, or at least medium settings. I would like feedback from people who have owned these models (or similar models). Here are my four questions: 1 - How well can the Intel HD 3000 play these games? I've heard that it's a pretty weak GPU, but anything's better than my 9400m, right? Please give me settings and fps where possible. Does it end up having low fps on low settings with newer games? 2 - Does the 13" MBP get better gaming performance than the MBA? They both have Intel HD 3000 chips, but the MBP has a faster CPU (and GPU?), more RAM, and more VRAM. The only point I would see to getting the 13" pro would be if there was significant improvement for gaming. 3 - How noticeable is the 15" MBP's weight in a bag? I'm going to be carrying this laptop around campus and I want to know if the 3 pound difference is noticeable on top of having 1 or 2 textbooks. 4 - Which one would you get?