When I worked for TT support I had access to ALL of the programs and trust me ... ALL the downloaded versions work exactly the same way. Basic can handle all the same forms and situations. The only thing that Basic doesn't have is an included state return and the ability to import from "It's Deductible".
The only thing upgrading to a higher level does (aside from taking more of your money) is it gets you more guidance in certain sections (aka a longer interview process with more screens to click thru) which I personally find unnecessary since you get the same info by simply clicking on the blue "learn more" hyperlinks. So I always say to start with the Basic (or Deluxe if you need a state return) and only upgrade if you feel the need for more "hand holding".
