PSU comparison for tier 2

I have the HIVE 550, and it's pretty quiet and powers my overclocked 4670k and overclocked 760 HAWK just fine. My one gripe about it is the power cables are a bit on the shorter side, they won't reach around back and over the motherboard for CPU power. Other than that it's a great PSU.
 
what about Seasonic S12II-520 520W or Seasonic SS-500ET ? is this the one mentioned in the above link for Seasonic SS12 series under tier 2 section? thanks