I am one of the 100 hr plus folk. I found the LX 9000 easy to learn, but then I was already familiar with both the LX 7000 and SeeYou Mobile and the current LX software is a combination of those two. Knowing it well, I am easily able to brief my copilots on what they are looking at and what they might want to touch (the one thing they have to do for themselves is tell their screen that we have started the task). I certainly did not need to read the manual to set a task. I find the knobs much easier to use in flight than the CN interface (though I have only flown with one once). Most of the time all I need to touch the controls for is to change the zoom or the volume. In flight you certainly want to know what to find where on your main and any other screen without having to stare or fiddle. I suspect that working with LX Styler to set up your own profile helps a lot with that. Any moving map flight computer will be a distraction if you do not do your homework on the ground. Even on a familiar device using someone else's setup will be a major distraction.

Having said that I found the LX easy, I do believe the CN may be more suitable if you want to minimise your ground homework.