I always go with Antec. Not only are they first-class but also they are readily available and so can be bought competitively
The TrueBlue range at about 330W-480W is my preferred range for clients, whether as part of an Antec case+PSU or PUS only. They are whisper quite and fans can be connected to the Antec PSU and be temperature controlled.
www.antec-inc.com
I have the Antec 550W TB running my 5 SCSI system and there are not problems.
I would go Antec every time.
Antec for the price and purpose is the one I would go with every time. Unless someone can give me a superior alternative then I think Antec will remain my number one PSU choice.