Delta is the third OEM for Antec. They currently make the Earthwatts line, as well as the signature series.
I laughed a bit at this list. What you listed are brands, but as being pointed out these brands don't make the PSUs themselves. Corsair doesn't make a single PSU. Seasonic and CWT makes them, and then Corsair sells them.
Of the brands you have listed up there, I would take/use Corsair, Seasonic, and Antec. If none of those are available in my price range, I would use a Thermaltake only after I make sure its one of their good ones. Not listed but under the same rule is OCZ. Brands 5-7 I wouldn't touch. Ever.