Not too sure about the reef side of knight, but I think it's basically the same as the dry van side. Knight is like any other carrier, really, with the exception of non-force dispatch and pay raises every year,"as long as other carriers raise their pay first". They have standard bennies. I thought they were pretty low stress when I drove for them. They do have higher pay the most of the other megas, or at least they did before I left them in august of 06. I'm sure the reefer side has different pay structures for detension and loading and unloading, as your dealing with food warehouses all the time. But they do not pay for experience. You will make the same as someone just starting out. Their yearly bonus, If you get it, is in the form of a savings bond that you cannot use for 5 years.
Make sure you ask all the questions you can think of before you get hired on, as they do not volunteer any extra info when you talk to them, they'll just give you the standard recruiter speech.
They take real good care of their equipment. But go a little too long between B services in my opinion. However the phoenix shop is the worst knight has. either you have to fix it 2 or 3 times or it takes 7 to 8 hours, if not an entire day for an oil change.
Depending on your experience, if you hav a few years, I think you could do better. Just my opinion tho' Feel freem to PM me if you want.
Have a safe trip
Chris