The best thing about prova or test link in sales force was that we can create our own custom fields which are not available by default with standard field names like "Name" etc., so this helped us alot while creating customized profiles of accounts.
It took sometime before I realized how powerful this software actually could be when used along side other tools such as Api builder/API manager (which helps you write your api calls). This may sound stupid but if u havent tried then just give it try! You will get all benefits from using this product once its installed correctly!! Try it out first because sometimes there might be some bugs at initial stage. We were facing issues related to data entry into profile fields during creation process, hence solving these problems has been one of my key responsibilities here.