I have tried a few RAID 0 enclosures (esata through Lacie T-Bolt and USB3.0) but actually found two USB 3.0 4TB drives in RAID-0 using Apple Raid 2.0 (software RAID in Disk Utility) gave me the fastest RAID speeds over any enclosure. I get 270 plus Mb/s in Black Magic on read/write using two Segate 4TB (8TB array) Backup Plus drives (7200rpm). You need to make sure they are the 7200rpm drives though as Seagate now make 5900rpm drives instead for their 4TBs. It is a very cost effective method as you simply need the 7200rpm USB 3.0 external drives. You don't have to dismantle them for drives or destroy warranties etc. Just buy them, plug them in, run RAID in disk util and your up.