I still have fond memories of Smith's galaxy-spanning Skylark series, the planet bashing swagger of the Lensman series, and Campbell's unapologetic "super science", but the prose has not aged well and I find them difficult to read now. I feel a little sad about that.
I can still recommend Smith's The Skylark of Space and Skylark Three, and Campbell's The Moon is Hell, but not much else.
https://en.wikipedia.org/wiki/The_Skylark_of_Space?wprov=sft...
