I see you like dots as well as spending money.
The Samsung spinpoint drives (as far as I remember) have a higher platter density, and most likely have more efficiently programmed firmware. Higher platter density means that they can read more information while spinning at the same speed.

When you're looking at SSD benchmarks, note that many of those values, like high IOPS, doesn't actually matter most of the time. I believe Anandtech even says that in several of their benchmark articles.

Well you know what, if you need a reason to not waste money on a power supply, tell yourself that power supplies are more efficient the closer they are to their peak load. What does that mean? The silverstone will have a lower efficiency, and will put out more heat when your system is under load, and that will get even worse when it's not.

Lets count then, just because I'm curious.
Five of those noctua fans? Maybe...$120 USD extra.
Silverstone Strider 1500...Not really sure, $200 extra.
Asus Maximus IV, $110 extra.
CPU cooler, like, $90 extra haha. Okay, twenty.
The WD black editions are more expensive I think. Just a little, though I hope you change your mind on them.
So, $450 USD? You know that if you save money, you can spend it on other things right?