The Thermaltake Toughpower GF3 1200W wins in 4 out of 9 comparable specs, with 4 ties. Its biggest advantage is SATA Connectors (100% better).
RM1000e wins in 1 spec (MSRP: 15% better).
Recommendation
Choose Toughpower GF3 1200W if you want the best overall performance — especially sata connectors.
Choose RM1000e if msrp matters more to you.