To the op, I agree with Windows on Wash that there are high and low-end choices in every material. "Bang for the buck" has to go to vinyl hands-down with lower cost, better energy-efficiency, better warranty, and lower maintenance. That being said, there is nothing that can quite replicate the look and feel of a quality wood window. It really depends on your priorities and goals for the project.
Replacement Windows, doors, siding, roofing, insulation, and BPI certified energy consulting, Building Analyst 5051322 www.HomeSealed.com