Personally I use Sketchup and Blender (barely as I am learning). Sketchup is a bit much to deal with and you can find yourself rage quitting a lot if you don't know how to use it correctly
![Laughing :lol:](https://www.coastercrazy.com/forums/images/smilies/icon_lol.gif)
I would recommend learning Blender (it has a pretty steep learning curve but is worth it in the long run) and if all else fails begin modeling with sketchup. Hope this helps!