Hi, I have laying around both a wd my passport and a lacie rugged usb 3/ Fiwi 800 with each 500gb hdd. I own a nMP with plenty of external thunderbolt raid storage but have to go on outside edit jobs from time to time and need a viable solution that let's me extend my internal 512 gb ssd. Of course I'm looking at the lacie little big disk2 as the best of all options, but it's just too expensive right now for the occasional job. Has anyone switched the hdd in one of the aforementioned models with an SSD (preferably samsung evo 840 series) and can tell me how much throughput they allow over usb 3? If not, could someone maybe suggest another idea for my scenario?