While my knowledge is limited, i do have some to share. I've worked in a very reputable independent shop for going on 4 years now (summers and holidays for the last 2, college). Payed $20 an hour flat rate as an 18 year old kid is very nice, even if i was only turning 30 some hours a week. THe money is not with the dealerships, it is with a good trustworthy well known independent shop. As for tools, i do own some matco and snap on, but i also own craftsman and i have found them to be just fine for what i need. Any tool the takes a beating day in and day out buy the snap on, but if you use is once a month don't spend the money on snap on or one of the other big 3. THat all said, i enjoyed cars much more as a hobby than a job, its hard to work a 10 hour day on other peoples cars then go home and want to work on your own project, it just doesn't happen. So i've decided to do something better, Im 20 now and im a junior at wvu studying Mechanical engineering. I would really listen to some of the older fellows adive on here, If your dead set on a being a field technician, RVS and Diesels seem to the be the way to go.......