Why not add a little more power?
There is always good to have some spare for future upgrades.
I use EVGA 750W, however there is one a bit smaller, EVGA SuperNOVA NEX650G Gold.
It also supports 4th generation Intel CPUs (Haswell) and that's not the only selling point.
I have the 750W version of this PSU and I love it. It is completely silent, even under load.
And that 5 years warranty is a huge bonus (you just need to register at EVGA site within 30 days of purchase). Oh, I sure sound like salesman here, lol.
But I really love EVGA PSUs, they never let me down ( and few other PSUs gave up on me before, this one didn't ).
Ah, and you mentioned good looking (you can check EVGA site and see for yourself, that thing looks gorgeous).
And the price is around 80£, so competitive.