M. Stanley Bubien
My review is a little backwards&#8230; but I thought the most relevant should go first.WARNING: ONLY BUY THIS CARD ON SALE!The *typical* price since summer 2013 is about $24 for 32 GB, and about $48 for 64 GB.  DO NOT pay any more than this, and you can actually pay less if you have the luxury of time / patience.The lowest (non-lightning) price hit about $18.00 for 32GB and $35 for 64GB, in early December.  I basically buy when the price hits $20 or less, and the 64 nears $40.00.From December 2013 to January 2014, I watched these cards change price on an almost daily basis.  They initially went on sale for about $17.95 and $34.95 for 32 and 64 respectively.  I watched them slowly increase in price, with random dips and peaks for a month.  On January 6th 2014, they still show as a &#34;Best Deal on Amazon&#34; for &#34;7 more days&#34; but they are at the highest price point since last summer -- and higher than I have *ever* payed for these cards!  So don't let the &#34;Best Deals&#34; section deceive you, at $27/$50, these are NOT a &#34;deal&#34; in terms of price.Okay, here's my actual &#34;review&#34; of these absolutely great SDXC cards.****I have tried a variety of MicroSDXC cards, and so far the Samsung Ultra UHS1 are the best -- and the price can't be beat -- for all the most important reasons: speed, capacity, reliability, durability.I have not had a single failure, and I use these cards in my Nook HD+, Nexus 7 2013 (via USB) and my Canon 5D Mark II (with converter) and MacBook Pro (In the card slot).  They're durable and waterproof, and  I can use the same card in all these devices without reformatting.  I even had one go through the wash, and I still use it for pictures.For the technically inclined, I have cards with *both* the Clockwork Mod bootloader (for the Nook HD+) and the MagicLantern firmware for my Canon EOS 5D II on the same card.  I can pull it from the Nook, shoot pictures with the camera, and look at the results on the Nook by just pulling the card out of one device and placing it in the other.  This should be possible with any SDXC/SDHC card, but it turns out that the Samsung UHS1 is the only card I've found that works reliably.  Some cards won't boot because they're too slow too finicky, but all my Samsung UHS1s work great (the 64GB will not boot in the Nook, but no 64GB card will).I keep my eyes open for price drops on these cards because they've performed so well for me.  Samsung also has a newer, faster card, but its price-point hovers somewhere north of &#34;prohibitive&#34; so I still stick with these.  And that's good news regardless because as the new card increases its market share, these should drop even further in price.