Which 600W PSU for long term reliability, quality & performance?

[WILDLEGHORN]

My rig that I'm about to buy soon:


Core i5 2500k

ASRock Z77 Extreme 4

8GB (2x4GB) Corsair Vengeance 1600 dual channel kit

Zotac GTX 670 AMP!

Corsair Force Series 3 SSD 120GB (Boot + Gaming drive)

500GB Seagate Barricuda 7200RPM (data storage drive)

ASUS 24X Internal DVD RW

Microsoft Xbox 360 Controller for PC (Wired)

NZXT Lexa S

Cooler Master Hyper 212 Evo Aftermarket CPU cooler

Artic Silver 5 Thermal Compound

Seagate Free Agent GOFLEX DESK 2TB External Drive (for backup & other purposes)



I will be buying the PSU locally from a shop & ONLY THESE options for PSU are available:

1) SEASONIC S12II 620W

2) CORSAIR SMPS-650TX

3) CORSAIR SMPS-700GS

Which of those would be better for long term operation, performance, quality & reliability wise for my rig?

I won't be doing any SLI/CF ever in the future...might upgrade to another card but not SLI/CF ever!! Also I HIGHLY doubt I'll be adding any further high power consuming components into the system. Keep in mind that the place where I live gets quite a bit hot during summer times as well.

So keeping all that in mind which of those PSU above would you recommend??

Thank you, you guys are AWESOME!

 

[amuffin]

Either the Seasonic S12II or the TX650.

 

[WILDLEGHORN]

Either the Seasonic S12II or the TX650.

Do you know which one of them has got bigger cables?
Any other handy features?

 

[AlderonnX]

Any of those 3 are great choices for your build. Its nice that your local shop is just using good parts.

 

[bigcyco1]

The SEASONIC S12II 620W

 

[WILDLEGHORN]

Best answer selected by WILDLEGHORN.