NJA will certainly offer the most choice in how much you want to be on the road, with five different schedules to choose from (bid on, anyway. The CC52 can be tough to get), as well as options within schedules on maximum number of days on the road at a time. All travel and training is done on scheduled work days. Number of vacation weeks goes from 2 after one year of service to 3 after five YOS to 4 after ten YOS. You may change your base at will, with a 15-day notice to the company.
On the road expect a 10-12 hour duty period to be normal. Sometimes less, sometimes more.