Summary: After extensive experience, the best bootable drive for OS has been the large ugly HyperX DataTraveler HyperX 3.0 64GB USB 3.0 Flash Drive Model DTHX30/64GB These stay cool and run very fast. I have 4 and outperforms other drives as bootable OS drive with almost any configuration.
Pros: Great value for amount of storage with lifetime warranty
Cons: Purchased two. One was not recognized. even in Windows disk manager on 2 different computers. Had to use Linux Gparted to recover drive and format. Did not try repair utility for Silicon Powers website. Drives has disappointing speed. Was faster formatted to NTFS. performs very slow as boot drive...
Pros: Speed was incredible; compared to my Corsair survivor it was easily 4-5x. Even compared to my PNY, it was almost 2x. Seems sturdy enough. It was on sale and priced right. Cover helps prevent damage to usb.
Cons: Not the most elegant design - but that is a LOW consideration. No significant cons so far.
Summary: Only complaint I could possibly think of is that it wouldve been nice if they included a lanyard. Cant have it all ^_^b
Pros: Pretty inexpensive for the capacity. Pretty good speeds even at 2.0 connections. Solid construction and Sleek design for narrow fit scenarios. Solid 3-click positioning steel cover. Bought 2 extra for friends who found it to be very nice as well.
Pros: Using CrystalDiskMark was getting really high read and write speeds. Using 3rd party USB controller which is a bit slow. Was getting 95mb/s reads and 40mb/s write. Seems built using solid materials. The shroud clicks nicely out of the way.