Over the last couple of years I have used a mixture of paints within the interior
- household (exterior grade), Toplac and bilge paint
(not always only the bilge). The surfaces have been a mixture of Wood, GRP and Formica!
The Household paint
approach came from simply liking the colour of the Toplac undercoat
I am most impressed about the formica when painted (vertical surfaces only), has stood up to some knocks which had me worried and inspecting closely for damage. Upside / downside (depending on POV) is that the results look like painted wood, not formica.
I suspect (time will tell) that they will all be pretty much the same on longevity - the differences being how looked after.......and most importantly the preparation before painting - IME the absolute key is a good primer (pun intended
)..........I am figuring in 5 years time, a rub down all over, a bit of patching and another top coat should be more than enough - and a cheap
refresh to the cabin