The quality of the finished product and the copies made from your master tape depend on the quality of the recording equipment. Because it is not unusual for original video footage to be transferred several times before being incorporated into a final edit master, the quality of the original is important. For most corporate projects today, and even some commercials and television programs, Betacam SP is the smartest choice for shooting and editing. The master tape is then copied onto VHS or Beta for screening at your company. A reputable company will give you an estimate for using equipment or services not included in the original bid.
Many companies send their marketing and sales people to seek new business.
Most likely, they will not be responsible for producing your video. Chances are they will serve as liaison or Executive Producer for the production company. Except for key personnel, most production companies hire free-lance crews. This is the nature of the production industry. These free-lancers are experienced and capable of handling all production related matters.