Delta PSU's?

Which one? Delta like most manufacturers can show a wide variety of quality. It all depends what the customer wants. They can make some of the best if they try or something low-end. You know what, I think only have one 850w: the GPS-850CB. Oh and the one they built specifically for Antec.

The model's I can get are: DSP800's and TDPS825's.

Most higher watt ones are very well made. Delta is the maker of my Alienware 750w unit and powers anything i want it to!