First question is how much if any experianced in trucking do you have? Pay and volume are often based on this.
I haven't worked for them personally but I did talk with them a couple years ago and I think they are a leasing company. This is not a bad thing but, keep in mind, if they are a broker, leasing company, or fleet owner, they as well as any expedited company is in business to make money with your truck.
The primary expidite company we will call them company A.
They will secure work with the shippers. They don't have any drivers available so they hand off the job to company B and keep a percentage.
Company B may be a leasing company or fleet owner, or they work as a fleet owner or as a broker of sorts for a percentage. They may not have a driver available then they hand the job to you. If everything goes right and the job is not under bid by company A, the job still has enough money on it for you to make a reasonable profit.
Now, this is where it sometimes gets tricky...
You have an exclusive contract, this means you and your truck are dedicated to them only and you cannot find any other work no matter how slow it is. This includes side work, Your truck carries what, where, and when they say.
They often have requirements for insurances, truck year, make and model, you may be required to use thier venders for vehicles, insurance, equipment, and repairs, and you usually are required to have an escrow.
Now this is not all that bad so long as the jobs are bid and they pay right, and they can keep you loaded and rolling.
They take the financial risk when it comes to payment their sales team looks for the work, and as long as you get the delivery done with a clean bill of lading you typically get paid weekly.
For a newbie I recommend this option it he's you get up and going and allows you to learn the business. Remember, it's always advised to have a lawyer look over the documents BEFORE SIGNING ANYTHING.