I totally disagree about harder to learn, in my opinion studio is extremely chaotic and difficult to get adjusted to. But I guess that depends on what you are used to.
I don’t understand the looking “well defined” thing. If you have HW Shading on (Rendersettings for Preview), it pretty much looks like the final render. If you are taliing about sharpness of textures, you can set the size for preview mode also in the Rendersettings in the Preview tab. Lights are also important. IDL is not supported for preview mode, so that will not show, but I am not sure if that is waht you are talking about
Yes, it is probably due to me not knowing how to use poser, yet, and all of the desktop settings. I will stick to it and learn this software.