The Lexar NM1090 Pro 2TB is the objective winner, securing victories in six out of seven comparable specifications. Its most significant advantage over the competition is its endurance, which is 300% better in terms of total bytes written. This substantial lead in durability makes it the superior choice for users prioritizing longevity and heavy data operations. The Silicon Power UD90 1TB remains a viable alternative, primarily distinguished by its MSRP, which is 83% better than the Lexar model.

Choose the Lexar NM1090 Pro 2TB if you require a high-endurance storage solution capable of handling intensive workloads over an extended lifespan. Conversely, the Silicon Power UD90 1TB is the appropriate selection for budget-conscious users who prioritize a lower initial cost over the superior endurance and performance specifications offered by the alternative. Your decision should balance the need for long-term reliability against the immediate financial benefit of the more affordable option.