The Corsair HX1200i wins in 5 out of 9 comparable specs, with 2 ties. Its biggest advantage is Warranty (43% better).
SF1000L wins in 2 specs (SATA Connectors: 50% better).
Recommendation
Choose HX1200i if you want the best overall performance — especially warranty.
Choose SF1000L if sata connectors matters more to you.
