I am not sure why you think I don't know the difference between certifications(titanium , platinum, gold, silver, bronze etc) The only thing I've said is that the Corsair PSU was not Bronze certified and that 80+ Bronze is better than 80+ White...where is the issue???
i'm not saying you don't know the difference between them, i'm just saying the difference is little toward regular users
http://www.tomshardware.co.uk/forum/338726-28-differences-bronze-silver-gold-platinum-certificates
respectively 2%/3%/2%/2% at 100% load for 115V and 1%(albeit being not defined)/4%/3%/3% at 100% for 230V
https://www.reddit.com/r/buildapc/comments/34opfc/discussion_does_the_bronze_silver_gold_certified/
"The difference it makes to your power bill is going to be very small."
more importantly
"If your components pull 300W from a 600W power supply, then an 80 Plus Bronze power supply can draw up to an extra 53W, which turns into heat inside the power supply. An 80 Plus Gold power supply can only draw up to an extra 33W (on 115V) or 26W (on 230V), so the heat generation inside the power supply is reduced by something like 40-50%. That's a really significant difference."
technically for temperature it does help, but with most case having the PSU draw air from the bottom and the PSU airflow is in(from outside the case)/out (on the back) the heat is not an issue either
logically
"Mounting it to draw air from below and then exhaust out the back gets the best cooling inside the power supply itself, and it pretty much doesn't affect temperatures in the rest of the case."
that's why i said/wrote : for reputable brand like Seasonic/Enermax/FSP the 80+ as long as it's a bronze (only shady no name brands use 80+(no rating) usually) it's ok for most user
the OP can't go wrong with a FSP for sure