1975 280SEL W116 - which trim level to choose for the interior?

I'm considering purchasing a 1975 Mercedes-Benz 280SEL W116 and I'd love some input on which trim level to choose for the interior. Specifically, I'm torn between the standard interior, the wood-trimmed interior, and the leather-upholstered interior. Are there any pros and cons of each option that I should be aware of?