This is perhaps the most competitive segment outside laundry with two very good, marquee brands.
Bosch....starting at $499 after rebates. USP (unique selling proposition): Quiet, water and energy efficient.
KitchenAid: Fairly quiet, eviscerator (fancy term for grinder) and heated dry.
I like Bosch's efficiency and KitchenAid's grinder (although Bosch's mesh filter is more than adequate). Heated dry uses way too much energy and is only 1.4% more efficient.