For short documents (under @100 pages) and all page layout FH10 is simply easier, more powerful, and better looking (!) than Xpress.

Illustrator still has some drawing functions that work better than FH10's, but when using AI to put a document together you are reliant on QE or InDesign (and their quirks, faults, and headaches) for your final product. FH10 allows me to put the whole thing together using one consistent interface, and to print using what I find to be the best printing interface going (infinately better than QE's outdated print dialog).

FH10's master pages are as usable as QE's - once you spend the time to figure them out. Text handling is much better than QE's, and while my friends disagree, I find text in ANY version of FH to be better than AI's has ever been.

There is some grumbling in the newsgroups about the new tools interface in FH10, particularly about the "improved" Pen tool. If you are comfortable with AI's Pen tool then FH10's should feel fine to you - if you (like me) really prefer FH's traditional Pen then FH10 is going to take some getting used to. And the authors warnings about resources in Win9x and ME are spot on - run FH10 by itself or be prepared for a quick and unhappy lesson in resource management. My experience on the Mac is better, although working in OSX is a little problematic - more a fault of the unfinished OS than any lack in FH10. OS 9.1 and FH10 cooperate well, but you won't be happy running it on a beige Mac - this thing REALLY wants a G4 and as much memory as you can throw at it.

My two cents is to get both FH10 and AI9 - for the same price as 1 copy of Quark or InDesign - and have the best of both worlds. (Use the money you save to buy a second monitor to use at a pallette well - talk about improved workflow!)