If you are Searching a best Software for OST to PST Conversion, then As per your needs, you can try the application OST to PST Converter. I hope this tool could help you out to convert OST files to PST format. The software is effective and takes very less time in the whole conversion. 

This software is also capable to recover & convert highly corrupted OST file to PST file format. This software is comes with some advanced features such as Exclusions of Unwanted Data, Smart Recovery Modes, Highly Compatibility and much more.

By using this software, you can convert all OST File data into PST, EML, MSG, HTML, EMLX and many more format and supports all MS Outlook file versions included- 97, 2000, 2002, 2003, 2007, 2010, 2013 and 2016 and supports windows versions upto 10.  

Use this free demo version which to discover features and function before purchasing the full licensed version. this trial version will see you preview of recovered or converted OST emails.

Download link:- Convert OST to PST