Back in July, I sold my 13" MBP MC700LL/A for an ultra portable 11" MBA MC969LL/A. Now, that MBA is a really sweet and portable machine with decent pep. And when at my desk, I connect it to a nice 24" Samsung monitor (just as I had with my MBP). A couple weeks ago, I bought an iPad2 and really since then, my use of the MBA has decreased significantly. Always keeping an eye out for deals, I found that same model as an open box at Best Buy yesterday. Decent price drop now since the newer version came out a few days ago...I actually wound up getting it for $878 w/tax included. Like-new condition, box and all. So, long story short, I am thinking of making this MBP my primary laptop again. I still have my 128 GB SSD drive from before (had paid $175 for it) and plan to put it into this MBP. Compared to the MBA now, this MBP has the same 4GB RAM, 128 GB SSD, and Intel HD 3000 graphics. I figure I can sell the MBA for $1050-1100 on CraigsList, so price-wise is about a wash. As I see it, the main differences now between the two are: Screen size: 11.6" vs 13.3" Screen resolution: 1366x768 vs 1280x800 Laptop size Laptop weight: 2.4lb vs 4.5lb Speed: 1.6 i5 vs 2.3 i5 Battery: 4hrs vs 6hrs (actual use) Ports/Drives: MBP has Superdrive and SD slot Upgradeability: I can add RAM and SSD to MBP...MBA is as-is Any other key attributes I'm missing? Would you go back to MBP or just stick with the MBA? I kinda think the other reason I'm leaning this way (MBP) is because of my recent iPad2 purchase.