We have an Intex 18 X48 pool, their ultra-model. We've had a few of these over the years. This one seems to be poor quality compared to the others. After only 2 years the steel legs, Tees and beams are rotten and rusting. I've reinforced about half of them with aluminum tube to keep the pool standing. So, my questions is who makes a better quality above ground pool? I'd pay more for something that will stand up and last for more than 2 years. What are the options?