I can't say, I didn't watch more than a few unrelated episodes of both series and at the time they were running here in Germany they basically turned into a single entity in my mind "the dark and dirty space station show".
A year or two ago I tried watching DS9 from the beginning after forcing myself to watch Star Trek TNG but stopped before the first season ended.
I would try the same with Babylon 5 but it seems not available on streaming.
With an interest rate of 6.5% you have a doubling time of roughly 10 years. So over 50 years it's a huge difference.