Where do I get a good PSU?

[FluxCap]

I need a quality 400w PSU so I can see if it fixes my reboot problems. If it doesn't help me I need to be able to take it back without hassle. Suggestions?

 

[Krye]

1) Local computer shop.
2) Pricewatch.com --> look for Enermax 400W PS

 

[FluxCap]

BUT do you know where I can try one and be able to return it???