As long as you are chopping and not wanting to actually dice a food processor works just fine.
Just pulse it or you will very quickly make mush out of it.
I bought a KitchenAid Mixer from their outlet store where the sell refurbished appliances for a bargain.
Here is the link.
Just click on what you are looking for and search.
http://www.kitchenaid.com/shop/more-...t-3/102020231/
Here is a good processor.
http://www.kitchenaid.com/shop/-%5BR...06/RKFP1344CA/