We've got hundreds of Metrix users, running on Mac and Win. We support Mountain Lion and will be supporting Mavericks. About 40% of our users are Rampage users, so you can be confident that Metrix and Rampage work great together. About 98% of our users were former Preps users, and in fact a bunch of us here were former ScenicSoft/Creo/Kodak employees, with decades of experience working with and developing Preps - we really understand where you're coming from! Call the great people at Rampage and ask them about Metrix.
stargate, we can import Preps layouts/templates automatically, we have automated (no user scenario choices and manual tasks) job ganging and quantity optimization, for a fraction of the price other solutions will cost you.
Contact me directly for a FREE trial licence.
raymond @ imposition.com
Have a look at Metamation planning & layout solutions for entire range of offset print jobs - Commercial, bookwork, packaging with support for both sheetfed and web presses. Choose the modules you need. Drop a mail to email@example.com