You can figure average weekly miles a truck and come to a few conclusions from their record.
Like whether the keep their equipment up. Whether they push you to run illegal. What kind of drivers do they hire?
Just remember, even a good company can have a bad dispatcher that will make a driver think the company is bad. Then there's the screw ups that think everything is the companies fault. Then there is the occasional bad company and they have a good dispatcher. So many variables to consider.
But the above links are solid info to make your own judgement.