There are two different technologies in manufacturing flash memory, SLC (Single Level Cell) and MLC (Multi Level Cell). SLC memory cards stores one bit in each cell, leading to faster transfer speeds, lower power consumption and higher cell endurance. The disadvantage of Single-Level Cell is the manufacturing cost. MLC memory cards stores two bits of information per cell. MLC cards achieve slower transfer speeds, higher power consumption and lower cell endurance because of storing more bits per cell than SLC. The advantages of MLC cards are the lower manufacturing costs.
Anytime there is a change/charge to a cell there is wear and tear on the card. I like the odds of solid state for many years of use.

Michael Palmer