The differences are substantial, all in the favor of you the author. In both cases, you are paying money to be published, buy books, etc. But with AuthorImprints you keep 100% of the royalties, get to keep all the files and buy books at cost.
Most importantly, every account and registration is in your name and books are always custom designed. It also helps that you will most likely spend less and have far more personalized service!
* AuthorHouse operates under a range of brand names such as Xlibris, AuthorHouse, iUniverse, Trafford, WestBow Press, Balboa Press, Abbott Press.