As the thread title says, I am replacing my mid-2010 13" MBP (reluctantly). I'm considering the MBA but I'm concerned about a few things. 1) Is the MBA going to feel way too slow? I know the flash drive is supposed to make the computer faster. I don't game or run graphics-heavy programs but I do tend to run a bunch of different programs at once and open up a lot of tabs. I would get the 4 GB RAM. My MPB has a 4 GB RAM. I'm not a tech person though - does this mean I wouldn't see a difference? 2) I'm considering the 11 inch MBA because it's super portable and also because it's the cheapest. Do you think this would start to feel way too small (the screen)? 3) Can someone tell me what kind of difference I would see between the 1.6 Ghz processor on the MBA vs. the 2.4 Ghz on the MBP? I think my old MBP was probably overkill for what I need my computer for (I'm a teacher, word processing, some presentations, internet, lots of tabs, some vid processing) but I'm deathly afraid of buying an MBA and being frustrated with its slowness. I'm using my old MB (2007) and it is slow as all heck and SO annoying. Thanks!