Senior finance executives at 42 percent of companies believe they will spend more on travel in the next two years

, while another 42 percent think spending will remain flat, according to a CFO Research Services/American Express Corporate Services survey. Among 332 survey respondents--62 percent of whose companies generate $10 million to $500 million in annual revenues--17 percent said they have preferred relationships with conference venues, 48 percent said they have preferred lodging suppliers, 54 percent said preferred airline arrangements are in place and 62 percent said they have preferred rental car vendors.