I know I'm beating a dead horse, but I have been reading posts on the TRIM problems with ssd drives in Macs and am leery on upgrading but I have to do something. My old Macbook is reading/writing at 80. Since my Macbook is only a SATA II, is a Toshiba THNSNC512GBSJ a good buy for this unit? There is some on eBay that have the Apple logo on them, which I would assume would make the drive TRIM enabled without modifications. I have a 1TB drive in there now but I will give up space for speed.