Building Materials

What type of building is better for farm animals (horses mainly)?  Our horses are stabled at a barn that is is cement (keeps it cooler in the summer which is nice), but I was wondering about wood or steel buildings as well. What's best for the horses? What is better cost-wise? What is easiest to maintain?

We have one year and seven months until my husband's child support is done.  I have planning to do on FINALLY being able to get into a house that we can actually fit into in one year and seven months.  Can't wait!!