A day after revealing NAB, CBA and Westpac were scoring record satisfaction highs with consumers, Roy Morgan suggested yesterday that the Big Four banks have a little further to go with their business customers.In Roy Morgan's latest survey of business banking customers, the Big Four raised their overall business banking satisfaction score to 64.6. That's improving, but it is still well behind the 78 per cent the Big Four recorded with consumers. Foreign banks scored 68.9, and smaller domestic banks also outstripped the Big Four. (Building societies and credit unions scored higher still, but with small sample sizes.)Roy Morgan's industry communications director, Norman Morris, said in a statement that the gap between the Big Four's consumer and business satisfaction scores was "probably an indication that in this uncertain economic environment more focus is on the relative safety of the personal bank customers at the expense of the perceived higher-risk business customers"."As a result, when the business outlook turns around the banks will have considerable ground to make up in order to gain and retain customers."Westpac easily leads in satisfaction among the Big Four in the survey, and raised its score 1.5 points, to 68.7, in the latest result. It continues to outstrip its closest rival, CBA. ANZ is last among the Big Four, just as it is among consumers.NAB, however, has created a huge gap in satisfaction between its business banking - with a score of 62.7 - and its consumer operations, which scored 80.4.