Alik Griffin

Lexar has always been known to make great UHS-II memory cards. The Lexar 2000x is one of the best UHS-II memory cards available to date. Their 633X UHS-I card however, is only just decent. It's not slow, it's just not fast compared to what the other memory card titans have to offer.  Lexar cards will become more increasingly difficult to find as they have been discontinued as a brand.

The Samsung EVO card is one of Samsung’s slowest cards. It’s also a fairly old card as the new models of the EVO cards put out some decent performance.  I…

The Samsung Pro U1 SD Memory card is a decent card from Samsung. It performs about the same as the Sandisk Extreme Plus except this card comes in a U1 variant, which could create problems for videographers. Samsung does have a U3 version of this card but it's much more difficult to find. It may have been discontinued. Samsung memory cards also have some compatibility issues with 4k or XVAC S video in Sony cameras. And since this card isn't U3, it won't be compatible with Sony's advanced video codecs. For casually shooting with any other brand like Fujifilm, Canon or Nikon, the Samsung Pro U1 card works great.

The Sandisk Ultra is sort of Sandisk Junk card. They aren't yet available in the U3 or V30 speed class and their performance in general is very slow. But not all is bad with the Ultra cards. They do have some very impressive read speeds, but write speeds are usually on the bottom of the charts.  This could still be a good memory card for videographers that are using cameras that don't record in a very high bitrate. For example the Micro-SD version of this card is a great sd card for the GoPro. This of course is not the micro version and I believe GoPro stopped using standard SD cards after the Hero3.