Many people think they don't want to use SketchUp because the models look like...well....SketchUp. But your models don't need to look like the default SketchUp style. You can use SketchUp's Style Palette to customize your SketchUp models. Or you can go one step farther and bring the images into an external image editing software, such as Photoshop. You're probably saying, "but wait...I don't have several thousand dollars to spend on another program". The good news is that you have all the tools you need in Photoshop's consumer version of the program, called Photoshop Elements. This program is often on sale for under $100 and gives you all the editing tools that I use from the full program. Using these tools, you can "tweak" your images even more to customize them.
We cover how to use Photoshop elements in our intermediate interior design details classes.