Workstations are as unique as the people that use them. Their is no good cookie cutter solution to this.
Typically what I have found is dual displays is always a good thing. Running duals always increases productivity. Studies have shown at least a 30% improvement.
The other thing is a good chair. The more adjustable the better.
The desk, however, can be anything. From door to the most expensive. A desk really is a desk unless you have some special requirements.
TRA Consulting, Inc