I use PDF Snake for pre-press imposition!

I’ve often extolled the virtues of Adobe InDesign as my page layout application of choice, and while InDesign includes some basic imposition features, if you need to do anything really complicated you should look into getting PDF Snake.  PDF Snake works with Adobe Acrobat Pro and gives you all the imposition features you could possibly want for most pre-press needs . . . and it’s far more affordable than its more acclaimed competitor. Check it out if you need to make booklets for any binding or lay up multiples of any design to use the most of your paper.