There is no version called "sole proprietor." If you have self-employment income for which you prepare a Schedule C (or even two Schedule C's for two businesses) you can use online Premium or desktop Home and Business.
If you have a S-corps, C-corps or multi-member partnership, you need TurboTax Business.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**