Lol it's not so much rather you have space or whatever, it's just that it's huge for a basic computer. I have a full water loop and 5 drives in this HAF 922 and still some room to spare and it's what I would call a large mid tower.
NZXT fans are 200mm, it's just the mounting holes only align to NZXT cases. I bought the high CFM NZXT 200mm fan and it didn't work in my HAF so that's how I know the reverse wont work.
I would chose either the Asus or the ASRock. I prefer ASRock myself.
Difference between the two video cards would be noticed purely in gaming.
Edit: Just saw the above post ^^ I don't recommend any PC speakers as I think they are all kinda crap. I think if you want something that sounds delicious then you need a good A/V and studio monitors or a good set of cans. That requires an external DAC and high quality amp too.
Okay so if you had £180 (US$290) to spend on a set of speakers what would you do? Also I meant to ask if there was any particular reason for recommending the Samsung over the Crucial?
Thanks again!