The be quiet! Straight Power 12 1000W wins in 5 out of 9 comparable specs, with 3 ties. Its biggest advantage is 12VHPWR Connector (100% better).
Ion+ 2 Platinum 860W wins in 1 spec (MSRP: 21% better).
Recommendation
Choose Straight Power 12 1000W if you want the best overall performance — especially 12vhpwr connector.
Choose Ion+ 2 Platinum 860W if msrp matters more to you.
