Yes, the 55/2.8 is a real winner...I had one once but I don't use macro much so let it go...then found this 60/2.8 cheap...with broken (glued?) AF/MF switch so it's not worth much to anyone wanting AF...but on the Canon there's no AF so it's worth all I paid for it...
As an aside...
I had an 85/1.8 "H" Nikkor and an 85/1.8 "K" Nikkor and the "K" had 1/8 F-stop brighter/contrast than the "H" @ 1.8...perhaps due to the "K"'s updated coating...and @ 1.8 THAT was important.
And I thought it interesting that the single coat 50/1.4 "S" here had a brighter midrange gray than the multicoated 50AIS... the difference isn't much, but noticeable...