Not bad, I did have one myself, but got rid of it.
The 60s and 70s head was a lower profile head, so some like the flare tip original superspeeds from the 50s and the fat boy, others prefer the slim adjustable and the 60's SS which was kept for the 1970s too, only different was being the black handle which was lighter.
I've always preferred the 60s lower profile head on the slim adjustable and 60s SS, to the point that I didn't even like the 1940s original SS with the different handle ( I have a 1949).
They are a great introduction to vintage DE gillettes, I cut my teeth on the slim twist and other plastic handled 1970s DEs, and did own a super adjustable and super speed black handled 1970s razors.