Question says it all. I was looking at the 256gb range SSDs and the 2 that I was looking at were the Plextor M5M and the Samsung 840 Pro (both 256gb). The Samsung costs about $40 more for like the best performance and power efficiency available, but benchmarks show that M5M is not that much worse, and costs $40. Tell me what you thing, is it worth spending an extra $40 on the Samsung or should I just get the Plextor?