While there may be many options in the menus, I fail to see how they could possibly be confusing!

I mean:

Navigate To ->
Mute Sound ->
Night Colours ->
3D Map ->
TomTom Shop ->
Advanced Planning ->
Browse Map->
Help Me ->
Manage Favourites ->
Call POI ->
TomTom News ->
Change Settings ->

(and just for illustrations sake, the Navigation sub menu)

Home
Favourite ->
Address ->
Recent Destination ->
Local Search ->
Point of Interest ->
Contact
Photo ->
Postcode ->
Point on Map ->
Coordinates ->

If somebody is somehow confused by those, then they probably shouldn't be allowed to drive. Incidentally, have you tried adding a favourite in navigon, they have a nice button in the tab bar named "favourites", and when you get in there there's a nice button marked "edit" and when you click that you only get the option to delete existing ones, not to add new ones. SWMBO couldn't work out how to add favourites or set the home location, it took me quite a while to find out how to add them, needless to say, she won't use it and went back to TomTom, despite the pretty "panorama view".

At the end of the day it's all down to personal preference, Navigon very often appears in the store heavily discounted and it's a no brainer to purchase it, but when it and TomTom are at their regular prices, I'd buy TomTom every single time.