Iím replacing the 40 year old gutters on my home. Iíve received 3 quotes for the replacements. All the quotes are within a few dollars of each other and the cost would be for either steel or aluminum gutters. Any recommendations on which to choose. One company said they would recommend the steel the other said aluminum. The steel has a 20 year warranty and the aluminum carries a 40 year. The third company only sells aluminum.