Difficult to say. Seasonic is a specialist maker of PSU's & have been making them longer than Corsair have been selling them. Corsair have fingers in many pies & have sold PSU's for about 13 years. They have always had PSU's made for them under their own requirements & specs, Seasonic was the first maker of Corsair PSU's when they first started out then changed manufacturers. That didn't go too well for them at the time of the change, I think they are more or less back to where they were at the beginning of when they started selling PSU's.
I would consider Corsair again when it comes to buying a new PSU, probably an RM or an RMx model. The HX series I wouldn't buy again as I had 2 & both didn't last long, but that was almost 10 years ago & Corsair have moved on since then.