The Sandisk Extreme Pro UHS-II 280MB/s was Sandisks first UHS-II card. Like the Lexar 1000x, it's age shows. It does however still performs faster than the Lexar 1000x in most devices. While this card is a pretty good UHS-II memory card, it performs rather poorly in UHS-I devices. This card has also been discontinued so if you do find a copy make sure you're buying it to only be used in UHS-II cameras.

The Samsung Pro U3 is a great card for the price. It performs about the same as the Sandisk Extreme Plus. Where as the Samsung Pro+ performs close to the Sandisk Extreme Pro.  This makes the Samsung card great for cameras that don't demand a super fast memory card, or cameras that are more video focused. I was even fast enough for 4k in the Canon 5D IV, which puts out a crazy high bitrate video of 500MB/s. Albeit, The Samsung Pro was on the boarder of acceptable and I recommend a faster card for that camera. But every other camera this card should work great with except Sony. Sony cameras have compatibility issues with Samsung cards.

The Sony G XQD card is the best card that is still in production. With Lexar being discontinued, Sony is now the one and only manufacturer of XQD memory cards. The…

The Lexar 2933X is last an only XQD memory card by Lexar. It’s rated for read speed of about 440MB/s, although expect to see much slower speeds if you’re using…

PNY (Paris New York) has made memory cards for some time and can be considered a trusted brand. The PNY Elite Performance U1 memory card is one of the best cards for the price. It doesn't perform quite as quick as some of the best cards from brands like Sandisk, but it comes pretty close.  There are a few versions of the Elite Performance card, this is the older one. There is a new U3 PNY memory card that is slightly slower, but sustains a guaranteed 30MB/s write. This U1 version is only guaranteed to sustain 10MB/s. 

Sony makes a great midrange UHS-I SD memory card. Actually these cards are my number one recommendation for Sony shooters who want to have reliable XAVC S 4k video capabilities. A lot of times Sony cameras just don't like other cards and it seems to be completely random to have a camera that likes other brands cards or not. In terms of speed and performance, Sony memory cards are about midrange.

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.