4. Crucial Technology
Crucial Technology SSDs dropped a full 3 percentage points in market share from 2012 to 2013, yet still managed to remain in fourth place in total units purchased. We expect it had to do with price. Ranging from $99 for 128 GB to $530.99 for a terabyte of solid-state storage, Crucial's prices are among the lowest of any leading manufacturer. The company last year supplied 6.3 percent of the nation's SSDs. The year before, it sold 9.3 percent.