Outdoor cabinets- painted or marine grade?

Painted? I really only knew of teak being proper for outdoor (takes moisture well) but expensive like marine poly and with poly, it comes painted ( so wouldn't have to paint or stain)
teak is literally nature's wood. that sheet is heavy because of the density. it is also highly water resistant, which is why it is great, but can be hard to work with. most of my furniture is made out of teak or a teak structure.

teak takes a beating. i love it.

i had an outside teak bench, though never used, it was at my house over two years. never absorbed enough water to where it couldn't dry out without minutes. huge fan of the teak i am.

simple clear coat and bam! good to go.