SaveRenderTexture vs. SaveImage

[jacdelad]

Hi,
for my PCB program I create textures on the fly. Now I want to cache them since same data produced the same texture. Is it better to save the texture with SaveRenderTexture or the image itself (which is painted on the texture)? My question is not about image compression (let's say I save the image as BMP), more about whether there's up-/downsides to each method.

Edit: I just realized that RenderTexture<>Texture. So, since there's no SaveTexture-command I'll have to stick with saving the picture.