A while back we received a piece of machinery which used a Pico, and I ended up changing it to a LOGO!
Don't know if it still true, but the Pico programming software printed out timer setpoints well to the left of the corresponding ladder logic, and it was nearly impossible to understand the resulting documentation. This factor, and that and we already had a dozen or so LOGO! units vs. none of the Picos influenced my decision.
Hardware wise they seemed pretty much the same, and I was able to use the LOGO! programming cable on both of them.
Older LOGO! hardware versions had more limited front panel capability, but newer ones (starting at rev level 4?) have messaging (which I use extensively), and softkeys (which I haven't used yet).