Most of the time, I always think if I should make most of my semi-horrible builds textured or just plain SmoothPlastic. The build may be bad, but hey, it’s my first time.
Honestly I’d say it really depends on the build. For example, low poly models tend to appear more cartoony and simple (Such as your tree) rather than realistic so they use smooth plastic. If it’s something very detailed and meant to be realistic, textures enhance the realism.
That depends on the theme of your game! If the game is a lowpoly cartoony style then i would say go with Smoothplastic. But if you want your game to look non-cartoony and realistic then go with textures.
I’d say that it looks cleaner with smooth plastic. With your low poly-ish building style, I would think that the one without textures is more aesthetically pleasing. Textures are mostly used more for higher poly, more detailed builds, instead of low poly builds. Again, it’s up to personal preference.