Depending on your hardware as we;ll some nice options,
http://pcpartpicker.com/products/compare/JYyFf7,kz7CmG,qYTrxr,rxH48d/
keep what the pc uses in mind,the G2 from EVGA is a solid choice,The 650watt GQ as well.If having a pc which doesn't use alot of power would the 450watt FSP already do fine,but the effiiciency of the others is so good that it probaby doesn't make a difference and with higher watts would you be able to use a higher wattage gpu.Looking at that will new pc parts rather use less than more in the future.
The 750watt bronze is probably only necessary when using an overclocked system with two heavy gpu's.