Can only speak to 4 string Chromes ECB82 (105-50) & Sad' SBF45 (105-45). Chromes are stiffer & somewhat brighter but break in (tonally) nicely after a few weeks. I like the stiffness because I play forward of the bridge pup a lot with a fairly percussive attack to get the notes to pop a bit ("old skule" flat wound approach). The chromes have a prominent fundamental that makes them sound more "full bodied" & "heavier".
The Sadowsky 45's have a nice growl on the low end & a very balanced tone/sound over the 4 strings but slightly less "weighted" than the chromes.
The stiffness & "edge" of the chromes take patience to get used to. You'll probably find the Sadowsky 45's a comfy fit from day 1.
IMO the Sad' 45's are the most suitable for someone who wants to maintain a more "calculated" round wound approach to attack & fingering etc. BUT.....

B.
PS: On any flat - before stringing the bass, unwind the strings & run the length of the string with a wet spot of rubbing alcohol on a cloth by pinching it around the string. It'll remove all the manufacturing residues.