Pros
Overall, the company was good to work for. The trucks are maintained very well. I made about $1000 a week after taxes, and the company will get you home almost every weekend. The training program is solid, safety(read: liability) is paramount, and they care about their drivers. They won't make you do anything unsafe, or get upset with you for conforming to hours of service laws provided you're operating efficiently. Pay is variable based on how well you drive- if you get good fuel economy and don't go out of route, your pay will improve. Load securement can be a pain, but the exercise is good for you and will help keep you from becoming fat. Your driver manager is everything, so if you don't like the one you've got, speak up about it and get assigned a new one. I was overall pretty happy working for TMC, and only left because I was moving to a place they don't operate.
Cons
A lot of the people in the training program are enormous jackasses(it is very much like the military), but stick it out and it's much better when you get on the road. The trucks are "well equipped", but what that means is a lot of "safety" sensors that will beep at you annoyingly and drive you nuts. Maintenance is slow as all hell, and if anything breaks, you're going to be spending a ridiculous amount of time in the terminal. When you're put in a hotel, they will put two drivers in a room, which means the other person will snore like a foghorn or blast stupid crap on the TV, and you won't get good sleep. The safety department cares about liability first, cost next, and safety as a distant third. People in the safety department can be extremely disrespectful. They have absolutely insane rules about cleanliness, and you'll be washing out the inside of your truck for untold hours when you go in for maintenance. No prepass on most trucks- you pay tolls out of pocket and get reimbursed.