Dont get the Tagan! I had to return 3 faulty units to Scan, got a refund and now have the same CoolerMaster Real Power M850 PSU and its a lot better quality build & package.
The CM 850w is not average, its a much better PSU, I am more than happy that I have bought this now.
The only thing I agree with Blitzen on is that the Tagan did have really nice modular cables but thats it. Dont get the Tagan
[edit] The CM has great amps per rail (4x18a & 2 x 28a). Of the reviews I have read its been rated as a 1000w PSU but sold as 850w due to the 80PLUS efficiency certificate. And it has large heatsinks internally to keep the heat/noise levels down.
Of the reviews I found after buying the Tagan, they stated that Tagan are using capacitors in the new BZ series PSUs from an unknown & untraceable chinese company which doesnt bode well for a so called high end PSU!