Do Not base "Buy" on Manufs Advertized performance, Instead look at most reliable/least user problems.
1) Manuf advertized performance is normally based on ATTO (A Benchmark developed for HDD) that uses readily compressable data. This is far from real Life. If want to look at benchmarks, use A) PCMark Vantage (for overall and individual scores for the software you most often use), or B) AS SSD scores.
2) High Sequencial read/writes is the least Important perameter for a OS + Program drive.
3) In real Life, day-to-day usage probaly only a nickels worth of difference between the better SSD.
I see you are in Australia, so can not buy from newegg, BUT the are a good source to check reviews.
As to Your choices, I have 2 m4's and a samsung 830. The Have been great. Have not used the Kingston (not sure which controller). If It is the SF22xx controller, the Sequencials are inflated, ore so than say Marvel controller.