In termite areas, add a little pesticide to the water, even for treated posts. I can't guarantee results for others, but our posts haven't rotted off at the concrete and have always withstood very heavy wind storms when our neighbors' concrete-set posts gave way. First, I assume that you do not have an old fence to tear down, which is an additional cost if a professional does the work. We had a fence removal party with neighbors. Second, wood fencing provides immediate privacy, but will deteriorate after awhile and need to be replaced usually before the metal fencing.
Metal lasts longer and is usually less expensive to install.
It is quite a bit of work, and harder than it seems. Since the wood fence comes in sections, it is bulkier, but so is chain link. Professionals will want to measure before giving an estimate. Also, hauling the old fence away will save money - our pickup service charges for removing large pieces of fence material. You may even save money by providing some of the materials, but it' s a good idea to ask.