The Roland VM7100/7200 series systems are great and are I think they have the best price/performance /durability ratio right now.
although they have a bit of a learning curve because of the very flexible routing of the mixers.
They can be found for a really good price on ebay.
Stay away from the Behringerdigital mixer , they have had all kinds of problems with it.
Just read user reviews on it you will see alot of disatisfied customers.