Securb
One of Jerry's Kids
'57 Classics are A2
'59s are A5
Until I get the '59s installed and play the guitar for a bit, that's all I can say.
Edit: What I can say is that the '57 Classics have some characteristics of both A2 and A5. How that compares to the '59s, I'll have an idea later. My Trad Pro has a '57 Classic in the neck.
I found the 57 to be way too bright for me and installed a WLH bridge. Though the neck never bothered me it didn't gel with the WLH so now there is a WLH set in there. I put the 57s on Fleabay and they were gone in a couple of days. They are fantastic pickups just not me.