Duplicate content on my domain

[Court_H]

I have several pages on my domain that are using the same content except for changing a paragraph or sentence. Do I need to create unique content, even though much of the information pertains to a feature and is related?

[Svetoslav]

Whatever you do don't memorize the content in your efforts to alter it in each variatio. Leave your desk/laptop and have a cup of coffee/tea. Write down the content in your own words. That doen't always work for me, but I am able to get good variations when it does. Another thing I rarely do, but find amusing is I getting a cup of coffee and going where my colleagues go for a smoke. While eavesdropping on their conversation, I try to replace the subject of their discussion with the subject the page I'm stuck on. It is often bizarre but I get a few good expressions and synonyms.

[EGOL]

There is a very good chance that some of these pages will be filtered from the search results.

So, your current content has some risk of being filtered.  It might not happen but it could.

It is always best to produce unique content.

[USHoleInOne]

I would write as much unique content as possible, even if there are feature sets that are the same, explain how they are applied to each different product.