I have a long term positive experience using SanDisk cards. I have been very pleased with the way these cards work in my Samsung Galaxy Note 8.0. No problems whatsoever and the capacity is huge.I quickly became confused about the differences between the so called &#34;Mobile&#34; Ultra cards and the Ultra cards. The performance specs to my &#34;intermediate tech experience&#34; eyes were virtually the same. The prices were also similar, with the &#34;Mobile&#34;version slightly higher. To finally resolve my confusion I contacted SanDisk technical support. To my surprise, the &#34;Mobile&#34; version is the older, no longer manufactured version. The Ultra is the current model. So I immediately bought the current Ultra version, which very fortunately AMAZON had on sale!