Hi All, I'm looking to buy an external SSD and make it bootable for my late 2015 iMac. I'm open to any suggestions, but I'm thinking of this as a single dedicated drive (I don't need multidrive units). It's a 5k display, with USB 3 and Thunderbolt 2 ports. I'm looking for the fastest option available as it's going to a boot drive. Thunderbolt 2 wasn't wildly popular and I'm having a hard time finding any drives, am I wasting my time? I don't mind putting drives into other enclosures, it doesn't have to be one stop shopping. If anyone has had any success (or failures) with the above request please let me know. Any additional advice as well would be great. Thanks in advance!