Having a hard time deciding a macbook pro to upgrade for my heavy music production use. There're two refurb models that has the same price! Both around $2140usd at the HK store. 15 2.7 i7, 16g ram,512gb flash drive, retina V.S 15 2.7 17, 8g ram, 1TB, non retina Or shall i go for a used late 2011 15macbook pro, 1TB, 256ssd, 8g ram instead. now this used model is almost half the price of getting the refurb, but i'm not sure how long it will last? the user has been using it a lot for photo and video production. such a tough decision, i wish someone could give me some advice.