Crapmypants
Herald
Never heard of delta so i guess i'm not as knowledgeable about psu's as i thought 
basically reviews of seasonics always note that the quality of their capacitors (especially the secondary ones) are top-of-the line japanese caps. as other brands use high quality caps only for the primary caps. also they have the best results for clean power/ripple tests etc.
channel well is also a high-end psu maker (corsiar's hx series is by them) but they don't have their own retail brand unlike seasonic.
Usually seasonic is cheaper since it's not going through another brand/intermediate and channel well can at best be said to match seasonic in quality.
Here's some helpful links;
http://www.tomshardware.co.uk/power-supply-oem-manufacturer,review-32187.html
http://www.tomshardware.co.uk/power-supply-psu-review,review-32270.html

basically reviews of seasonics always note that the quality of their capacitors (especially the secondary ones) are top-of-the line japanese caps. as other brands use high quality caps only for the primary caps. also they have the best results for clean power/ripple tests etc.
channel well is also a high-end psu maker (corsiar's hx series is by them) but they don't have their own retail brand unlike seasonic.
Usually seasonic is cheaper since it's not going through another brand/intermediate and channel well can at best be said to match seasonic in quality.
Here's some helpful links;
http://www.tomshardware.co.uk/power-supply-oem-manufacturer,review-32187.html
http://www.tomshardware.co.uk/power-supply-psu-review,review-32270.html
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