I think the poly rattan type is what my Dad has.It looks lovely and he's had it about 3 years.still good as new but it goes in the garage over the winter. I was just like you and kept buying all different sets but all wood.All rubbish until we splashed out on teak about 3 years ago.It's expensive but worth it.I just jetwash the table and chairs in the Spring.No problem.Will probably teak oil this year but that's easy to do.Teak lasts a life time and has gone a lovely colour.