For dependable, quality work, walk right past any table top food processor/robot coupe. Anything with a plastic housing or bowl/chute will become landfill within a year of moderate use.
Get yourself a cast iron beast, a 30 qt or larger Hobart mixer.
Then get the shredding attachment, and get the slicing blade along with the shredding/julienning blades you want.
For larger julienne, or for any size dice, you get another attachment called the power dicer that hooks on to shredding attachment..
None of this stuff is cheap, but no one says you can't buy it used. This equipment is bomb-proof and can be used 18 hrs/ day. The mixer won't burn out after 1 hr of use, nor will it dance off of the table, nor will you have to replace crappy plastic bowls/switches/covers/chutes or the like.
Oh, and the mixer itself comes in pretty handy too....