The way I see it, these mba's will do fine when comparing performance between this model and the next. The bigger issue will be the ability for any new ones (whenever they come out) to last much longer than 4-5 hours (for the 11) on a charge. That will make all current users salivate for the next iteration.
Until then - this is a great machine and makes an awesome second computer. I went for the larger HD, more memory and faster proc- and I don't think I've pegged it - and I use this to do most of my development on when I'm not in the office. This has become my laptop. And it still doesn't take more than 60 seconds to compile any apps I've built in XCode, and I don't see any problems running django and ruby web apps...
Until then - this is a great machine and makes an awesome second computer. I went for the larger HD, more memory and faster proc- and I don't think I've pegged it - and I use this to do most of my development on when I'm not in the office. This has become my laptop. And it still doesn't take more than 60 seconds to compile any apps I've built in XCode, and I don't see any problems running django and ruby web apps...