It all depends on your overall budget. Are you looking at the $400, $600, $1,000 range? That's a great psu. However, if you are building a $400 pc, it's going to be way overkill.
1. How much are you looking to spend?
2. Is there any other main uses besides photshop and streaming video? Games?
3. Do you need an OS, monitor, mouse, and keyboard? Or just the tower?