Believe it or not, just because a company is well known doesn't necessarily mean that they have people that can do a good job for you.
Some companies make it a practice to hire new college graduates with little or no experience.
When this happens, you are contracting with a firm that's using your equipment as its training ground. This costs you money in the long run, and it may leave you with hidden liabilities in your equipment that you're unaware of. Well, one of the best starting places is your comfort level with the company and personnel offering the service. And one of the things that helps me feel comfortable with a company I'm planing on doing business with, is when the personnel feel good about their company. Also, if a company is using a progressive approach to the job, this usually means that the company is staying abreast of changes in the industry and has not gotten in a rut.