Is the Macbook Air what I want? And if so, which one?

[parapup]

hmm thats interesting b.c im on a windows vista desktop at work that has 2 gb ram and i consistently have issues b.c of the ram. im always at 90+% memory usage. and the funny thing is i don't do anything that intensive. i have netflix + browser (10 tabs) + and quickbooks 2011, running at all times. I think im def gonna need 4 gb ram on the mba.

If you use Vista - yes 2GB is not optimal. However for both OSX and Windows 7 (I tried both on my 2GB Air) 2GB is sufficient (I see 700Mb free most times).

 

[Onimusha370]

the 13" would be a great purchase for you.
unless you really need the portability of the 11", then the longer battery, faster processor, and the SD card slot are huge bonuses (on the 13"). also, the 13" isn't much larger or heavier.
good luck whatever you choose

 

[macjacky11]

MBA is a good choice. I would say 13 inch one will be better choice is your eyes will feel more comfortable on that than 11 inch.