From my point of view, time saving is the most critical piece in justifying purchasing of tools like this.

If I goto my boss that I need a tool & If I could save 5 hours per week using the new tool at this price range, my boss would buy it.

Atleast thats how I see it. Correct me if I am wrong.

Markus had mentioned all the frequently used features. 

I would suggest you spend some time with it to see how much time can you save. The CS people are very nice, if you need extension of the trial period, they would extend it.