There are many other choices Redline, Amsoil, Royal Purple.... I have personally had very good luck over thousands of miles using Redline PS fluid in my GM trucks. Friends have also had good luck with amsoil. Regular ps fluid is nothing special. Gm's fluid is no better than prestone, NAPA, supertech..... When you transition to a synthetic is when you will be getting something far more superior. I wouldn't even consider a conventional ps fluid as this fluid is rarely if ever changed and has little to no filtration and in some cases lack of cooling.