Seasonic S12II

Yes.

seasonic doesnt do slumps psu wise. it would be rare of them to do so as they are one of the most hired companies to design psus for other brands

I see, actually my first choice was the S12II 520w since it can handle the power need of my pc. But since I want some headroom for future upgrades then I'll have to go with 620w.

Here check this great psu, I have one.   http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I'm using a S12II 520w myself and must say its really stable. Never had any problems with it!

Seasonic is good brand so go for it

Fixed.  

Thanks, but I still have to check the availability of that one in my country.