I'd think a vitamix or equivalent would prove more useful than a food processor for most of the things you've mentioned. They can also do things that nothing else can do. They're not so easy to use if you only want to partially puree something, but a stick blender might be the best of all for that.
The biggest disadvantages I've found with the monster blenders are getting the last bits of food out of the jug (I bought a thin silicone spatula just for this, but it can still be a pain), and the noise. When I do anything that needs long blending (nut butters, etc.) I use ear plugs. The cuisinart's mercifully quiet thanks to a much slower motor.
