i am contemplating buying a late 2008 mbp air i found for $800 on CL. it has the 1.86 ghz 2gig ram and an 128 gb ssd. would that be comparable to the new 2010 version? i know the new one will edge it out, but by how much? i do a lot of art using flash, illustrator, and ps but just want to use this machine occasionally when i travel, ill have another machine for the heavy lifting if needed be. is that a good deal? or should i just wait and get the 2010 version which is double that?