I use Jabsco when on sale at WM. have to redrill mounting holes in floor ... no big deal ... and it seems better to angle it a bit out from the knee bumping mast.
I seem to change them out every 5-7 years ... by the time you change the seat and the repair kit ... it just seems easier to replace the entire unit.
Was on a Beneteau 380 10 years ago ... a big new Beneteau then ... and it came with the Jabscos as the standard head ... good enough for me.
Re spec on chain ... the "rules" seem to leave the choice of anchor and weight of chain up to the owner. Don't think many owners race with the standard "storm" anchor or the related chain that came with the boat. Question is the definition how small a "lunch hook" you can get away with ... which seems to be the racing mentality.
