I am considering upgrading my laptop because it is running significantly slower than it used to. I have a MacBook Pro mid 2009, core 2 duo 2.53Ghz, version 5,5 with 4GB of RAM. My main use of the laptop is for recording and processing music using ProTools 11. However, simple tasks seem to be resource taxing and slowing down the laptop. I plan to do a fresh install of Yosemite, but wanted to know if this planned upgrade is better than buying a new MacBook. Will I notice the upgraded difference? 1) upgrading my RAM from 4GB to 8GB ($100) 2) upgrading my HD from the stock 5400 rpm to this SSD by OWC:http://eshop.macsales.com/item/OWC/SSD7E3G240/ ($140) Total: ~$240 vs upgrading to a new machine i5 or better.