I have heard that Hyster is the most under rated for lifting capability ( a 15,000 will lift close to 20,000). I worked at a major piston ring company and the Caterpillar rings they made had the highest quality control of any brand they made. I have electric now but I am leaning towards LP. I am looking for a hard tire, 15K-20K range lift with LP. What brand do you consider the best and also which brand is considered the worst?