Suggestions for gaming build

[Brisuus]

Hey guys, I'm in the process of finalizing my first build and would really appreciate the opinion of more experienced people. Here's what I have in mind:

CPU+MB: i5-6500 and H110M-PRO VHL @ $412 (PC Themes)
RAM: Kingston Value Memory 8GB DDR4-2133 CL15 NON-ECC 1.2V Desktop Memory @ $46
GPU: Zotac GTX 970 4GB Twin Fan @ $419
SSD: ZOTAC T500 240GB SSD (Phison S10 + Toshiba TLC) @ $82.50
HDD: (Holding off on it until more discounts available)
PSU: Superflower Leadex Silver 90+ Full Modular 550W @ $119 / THERMALTAKE LITEPOWER 550W POWER SUPPLY @ $69.90
CASE: Armaggeddon PC Case Miicrotron T2Z Black @ $49.90
OS: Microsoft Windows 8 Professional 64-bit Product Key [OEM] @ $30 (Reddit)

What's the difference between the two PSU since they both supply 550W? Would it be better to go for the cheaper one/which one should I get?
Is the CASE big enough to house the components listed?
Are there any problems with the RAM listed?

Keeping within my budget of $1200 do you guys have any suggestions on how to improve this build? Thanks all in advance

 

[xtractor]

Hey guys, I'm in the process of finalizing my first build and would really appreciate the opinion of more experienced people. Here's what I have in mind:

CPU+MB: i5-6500 and H110M-PRO VHL @ $412 (PC Themes)
RAM: Kingston Value Memory 8GB DDR4-2133 CL15 NON-ECC 1.2V Desktop Memory @ $46
GPU: Zotac GTX 970 4GB Twin Fan @ $419
SSD: ZOTAC T500 240GB SSD (Phison S10 + Toshiba TLC) @ $82.50
HDD: (Holding off on it until more discounts available)
PSU: Superflower Leadex Silver 90+ Full Modular 550W @ $119 / THERMALTAKE LITEPOWER 550W POWER SUPPLY @ $69.90
CASE: Armaggeddon PC Case Miicrotron T2Z Black @ $49.90
OS: Microsoft Windows 8 Professional 64-bit Product Key [OEM] @ $30 (Reddit)

What's the difference between the two PSU since they both supply 550W? Would it be better to go for the cheaper one/which one should I get?
the difference is superflower consume less electric coz 90+ silver and it is modular too
want a bit cheaper get this http://www.sgpcmart.com/Xigmatek-Tauro-600W?search=tauro 600w used it and test on overclocking AMD system and it is damn good
Is the CASE big enough to house the components listed?
Yes
Are there any problems with the RAM listed?
Nope

 

[Brisuus]

Is there much difference between the Microtron T2Z and the T2X? I prefer the design of the T2X more but the T2Z was suggested to me.