I tend to prefer metal as I have gone off having to put plastics together, but I've also been looking at some one piece plastics in 1/72, its really the gluing together and posing I can't be bothered with anymore. As I have limited hobby time I prefer to get on with the painting than spend an evening trimming, sanding and gluing multi-pose plastics together.
Seems theres lots more options out there than I thought though!