Lexar's range of SDXC cards can be confusing at first glance, so to try and clarify things: at the top of the tree are Gold-series cards, while Blue-series cards represent the entry-level offerings. Silver-series cards occupy the mid-range, and within this series are Silver Pro, Silver Plus, and Silver.
Silver Pro is the upper mid-range choice, being a faster UHS-II card. Silver Plus and Silver are both UHS-I cards and are almost identically specified: both have an advertised 205MB/s read speed, but while Silver Plus boasts a claimed 150MB/s max write speed, Silver cards are slightly slower at 140MB/s.
