Is there anything to choose between these two sets for use on a boat
on both ham and marine bands (after appropriate doctoring) ? I am
inclining to the Yaesu, but largely because my main set in the FT-897
and I like it.

I am a bit surprised by the advice to add an SSB filter and DSP to the
Yaesu, that adds a lot to the price. How do the base sets compare?

Thanks