I'm still rocking my 2010 13" (2.4) with 4gb and 250gb HDD. Until I installed Yosemite I had little to no problems short of my battery slowly failing on me, which is easily replaceable. Then I installed Yosemite and realized I definitely need to upgrade to 8gb of RAM, as things have started getting pretty sluggish. So I'm considering upping it to 8gb as well as replacing the battery and throwing an SSD in the CD drive. However, I figure I'm looking at upwards of $400-$500 to do this and I really can't tell if it's worth it at that point. With a 2.4 C2D and GeForce 320m and I just holding myself back? I use my laptop pretty casually: Word processing, iTunes, internet, storing photos, light photo editing, light photoshop and the occasional older game. I'm torn between upgrading or saving another $600 or so and getting a new MBP. This laptop has been good to me though and something in me wants to just keep it until the wheels fall off haha. Thoughts?