I wouldn't use a cheap one bro :/ trust me im currently in the process of saving up for a xfx 450w core edition myself. Atm im using a generic psu modified to hold a 6 pin power connector for my 9600GSO. And my system is not at all stable. The link you provided seems to be the same kind of psu just better looking. My advice is to save up for a xfx core edition 550watts psu. Save yourself the trouble of ever having to buy one again. The 450w edition is 36Pounds. So the 550w shouldn't be too costly compared to that
In all seriousness though, will that one you suggested be efficient to overclock a 560ti aswell?
Shamelessly stolen for an avatar too.
Yeah you should have absolutely no issues with the XFX. I mean, it depends on what else you are running of course, but unless it's something bonkers you should have plenty to spare.