I've had 2...I started out with a Fostex VM200 which is a great little digital mixer with 8 ADAT channels, flying faders and fx processors.
I now have the Behringer DDX3216. I paid $500 for it brand new. Talk about bang for your buck!
Too many features to list, but I wouldn't hesitate to recommend it if you need a digital mixer with ADAT.
RLD