Well, let me get straight to the point. i have a late-2008 macbook aluminum and it has a 5400 rpm 160 gb hdd. im thinking about upgrading to either a faster hdd or an ssd. my options would be a 7200 rpm 250 gb hd or a 128 gb ssd. capacity doesnt really matter, as i still have about 100 gb left on my current 160 gb hd. i am wondering if it would provide a substantial speed boost to go 7200 rpm or wait until ssd's get cheaper and get one of those. i dont need to get an upgrade right NOW because if i wait for the ssd i'll just get more ram in the meantime. so, experts, what do you think? is a 7200 rpm gonna make my computer any faster? or should i just wait for ssd's to go down in price? thanks in advance.