It really takes a benchmark to tell the difference in speeds for almost all the SSDs (not counting the Pro version NVMe drives) unless doing something repetitive and long, switching or comparing side by side between the Samsung and the WD, realistically they aren't much different. For most consumers, with a single ssd as boot, there is no comparison, so with price being the last resort, 'good enough' will become king. Samsung makes the best, no bones about that, but how many really will keep a 120Gb ssd through several builds, maybe as long as the 10-15 years of useful life most SSDs show now? How long will the 250's last before windows 15 comes out using 200Gb and talks to you? Fast and cheap is all that really matters anymore, best is for those who can afford to throw away money.