Xrumer vs. GSA

Hello, I am currently using GSA to help me index T2, T3 backlinks. I am looking to purchase Xrumer, but not to sold about it yet.
Xrumer would help me with the same objective, indexing.
But, I think GSA is doing the same thing anyways, when choosing Wiki and Profile platforms, either scraping or using a list, is creating backlinks, sooo what is the value of adding Xrumer?

Is xrumer much better than GSA on finding wikis\profiles?
xrumer will need to scrape to be able to post, right?

Please, if you have experience with both products, let me know the added value of having xrumer.

thanks

According to me gsa is good. Xrumer I think mainly made for forums while gsa supports many platforms