Red Hat = easy to install and lots of eye candy.
Debian = harder to install not anywhere as much eye candy, no RPM, and the ultiment in stability with no new cutting edge products packaged with the CD's.
So if you want something that is easy to install looks like Windows {well sought of} and is easy to use Red Hat will work a treat but may fall over on ocasions as new "Bugs" get uncovered" while Debian isn't anywhere as easy to install or use as it lacks a lot of the easy bits but it is a tried and true platform that is the prefered platform by all the Scientific and Industry groups who's first considersation is stability.
Even if you are not impacted by Red Hat's recent anoucment about withdrawing from the "Home market" and only providing enterprise Linux their product will never be as stable as Debian but only because it has newer everything with more unknown problems. So I suspose it all boils down to what is required by you're company/home/whatever as to which one you pick. But Debians advantage is in the fact that there is not one company involved in writing code but a whole bunch of people around the world that are only interested in improving the "Bread" so to speak, what this means is that they can instigate change faster than Red Hat can but it comes at a price of not having the most up to date apps or code. Sought of depends on what is required!