fwiw, I’ve had big problems with anything over 128 gig when used with small files & frequent re-writing of existing data. I had an itunes library on a 256 & it was hopeless- kept going unreadable. same with a picasa image library. & the synthstrom deluge sequencer uses one for samples & song data; lots of reports of lost files, & users are starting to carry two cards, tag-teaming them. have you thought about installing an ssd?