I use the Menu Maker software from Xara, and find it maked very nice looking graphical menus. I was sort of disapointed when I saw the menus in the template pack -- so many were just plain "cheesy" and amateur looking :)
On to your post -- I really never cared for how they "slice and shim" rather than just making a typical GIF image, it makes it near impossible to edit the buttons should one be so inclined.
My biggest gripe about XMM is the small gap that gets placed around the menu. For example - on a website I created:
There is a gap between the bottom of the logo and the top of the menu even though I made the table containing them with cellpadding and cellspacing values of 0.
Somewhere in the messy jumble of a script they create (default name is xaramenu.js), there is something padding a table. I found it once, but the script is so painful to look at in notepad, I forwent the task and decided it looked just fine that way.
The downside to XMM however is that the menu is unreadable in Opera, and I still have to configure a script that will give Opera users (what little they are) a similar looking menu without the submenus.
Users of Netscpe 4.7x browsers also have issues seeing the submenus even thouhg that is a property supported by said browser.
In closing, it is a nice program capable of producing some nice menus, but the prgrammers have some work to do in the browser compatibility arena.
I find myself using it for my personal web-development/photography website, so it must not be that horrible -- but noting beats good, old-fasioned hand-written code!
Why do we spend countless hours making scripts to benifit less than 2% of the audience? Cause we're perfectionists!
Don't forget to set your clocks ahead!