I switched over to running Warhammer Fantasy a few months ago and have not looked back. After years of playing D&D I found the change in pace refreshing. It is just a complete different type of game than D&D, in that way it was exactly what I was looking for.
My group found that the rules were very easy to learn. They love that they can't really plan their characters out for levels to come. They might look at future careers, but they realize that the direction of the campaign will determine the Careers available to them.
I'm running a campaign in Bretonnia that is called "The Messengers". Two of the players rolled up a Messenger and Coachman, so I made the campaign into a very serialistic campaign where they had a new message or delivery every session that ultimately leads into an adventure of some kind.
So far, it has been fantastic. While the combat is tough, I've yet to have any deaths. Just some insanity and lucky rolls. They've defeated ghostly knights, a mad necromancer and more without a character dying. I know that this is a rarity in Warhammer, and I keep waiting for the first character death to shock them back to reality.
Perhaps the Chaos Cultists they face this weekend will do just that.
In other words, I highly recommend.