500 vs 512 from 400ci

I see, and agree with fisherman67 .
The 470 is great. 500 is great too has lightest Bob weight of all the strokers.
What do you want a 7000 rpm ripper or a ripper on the street mostly ?
It's kinda hard to give advice on this because I've seen them all rip and rip really good.
I want 7500rpm street ripper mostly ;-)
I have 470 right now and am thinking to gather parts for next short block while I still have money to pay for them.