What do you like best?
It's a very powerful rendering and drawing engine with a lot of options for kinds of drawing, and since it's a BIM program the potential for asset management is tremendous if you use it right. VW also allows plugins and the creation of custom tools without TOO much headache, down to a very granular level of control which though daunting, can be very very useful in streamlining workflow.
What do you dislike?
It's a very steep learning curve, with a lot in the way of basics tutorials for tools, but not a lot in the way of "so you want to do this thing - here's how you might tackle that task"
The behavior of lighting in the program is also pretty subpar, and in order to get Cinema 4D to make light behave better you have to shell out even more money. It's already VERY expensive.
Recommendations to others considering the product
You will spend a lot of time learning it. Much of that learning will be on the forums, or asking other experienced users for help. VW has good customer service if you can get through the phone walls, which is tedious. If you are a member of service select, you get access to tutorials for free.
What business problems are you solving with the product? What benefits have you realized?
I only need VW and Lightwright to do most of my work. That's the key benefit, and it interfaces with the other program fairly seamlessly in order to streamline the work more. I can make changes to the file by changing the LW and without needing to double check every single element of my plot.
Also, layering and classing being different elements, has been really powerful as I've come to use the two ideas in tandem more. It's another level of visibility and drawing control over AutoCADs layering system.