hardware / software question
I am considering purchasing the new macbook air 13". I currently have the original aluminum unibody macbook 2.4 ghz. The battery is dying and will only last 30 min and it is starting to get buggy.
1) Should I get the air right now or wait till the new OS comes out in fall?
2) Is there any advantage to purchasing a machine that comes with the new OS vs installing on a machine that has a different os (Mountain Lion) and already has other apps? Will it be more "buggy" if it is done that way?
3) Is it safe to assume that the new Macbook Airs will be faster than the previous ones?
4) I am not a power user (word processing, internet surfing, email, etc..) Is it worth it to get the I7 and or the extra RAM?
Thank you. Any help would be appreciated.