I have a base 2010 model and it's been working for me pretty well except just recently I've been running out of space (literally at 0kb, I had some problems in OSX because of this) so I decided that the upgrade to the new 2011 would be worth it. I use my old MBA for work and everything runs great, but I found that the development environment is hard to setup in Lion since we're using Java 5. Also, when trying to dual boot with Bootcamp, it's stuck at formatting the drive that I save my drivers to so I can't even dual boot. I love the new hardware, but Lion is just ruining everything for me. I'm thinking of just sticking with my old MBA and selling this one, or buying an ultimate 2010. What do you guys think?