Personally I'd go for the 1024. But it really depends on what you're after, comparing active with passive. I can't explain but to me the 1024 feels more like a 'real' bass, but that said I sold my 1024 and kept my 734a, but only because I wanted the active circuit. The passive need was supplied by my 424, which having had irreversible surgery had lessened it's retail value.
I suppose a real comparison would be the 734a in passive mode compared to the 1024, which I feel the 1024 wins hands down, but if you want active then there can only be one winner.
I think @Misdeehit the nail on the head with the comment on character, the 1024 has it's own tone whereas the 734a is a tad generic. They are both great basses in their own right though.
So, a P34 it is then. ๐ But then you have the P34 vs 2024 comparison.