I just bought an early '08 MBP(the last pre-Unibody model) mostly as a toy and not a primary machine(although it can serve as a backup to my main computer). I want to dual boot Snow Leopard and probably Mavericks(or maybe Yosemite, although I'm dragging my feet on adopting it on my main machine). In any case, it was advertised as having a failing hard drive. It definitely shows, as it takes about 10 minutes to boot into Mavericks and is laggy on pretty much any program launches. I have two hard drive choices in front of me. I'm not going to buy something else for it-what I list below are my options and the only options I'm considering(remember again that this isn't a main computer). 1. Intel 120gb SSD 2. Seagate 500gb SSHD(hybrid HDD/SSD) I'm sort of leaning toward the latter, as I think I would appreciate the space(I can clone my current MBP on it plus have room left over for SL) and I'm not sure if the SATA II bus can take full advantage of the SSD. The SSD appeals to me for heat, speed, and power consumption, but I can easily find another use for it and again am not sure I can get the full benefit on this particular computer. Also, for what I'm wanting to do, I think I'd feel a bit cramped on 120gb of space. What would you all do in this situation as I've described it? Again, I'm not going to buy anything else-the above listed options(plus a couple of other platter drives I could probably scrounge up) are the only things under consideration.