It appears that the Xtreme firmware update for the Plextor M5 Pro is little more than a marketing ploy. While Plextor does indeed get in the vicinity of 100.000 4k read Iops, the SSD is not much faster in any of the other benchmarks. In some tests it's even slower with the new firmware than before.
There is a lot of free Microsoft software to be had, programs which enable better web surfing and help protect against spyware are just two types. PCSTATS Tips