Despite all the negative publicity recently about the conduct of former advisers at Commonwealth Financial Planning, an investor survey has found that Commonwealth Bank enjoys the highest satisfaction rate among the big banks for its financial planning services.According to Roy Morgan Research, 84.2 per cent of CBA financial planning clients said they were fairly satisfied or very satisfied with the service.ANZ's financial planning service received a satisfaction score of 83.2 per cent, Westpac's service received a score of 80.5 per cent and National Australia Bank's received a score of 80.1 per cent.High income earners were less impressed. CBA, ANZ and NAB all received lower ratings from people with household income greater then $100,000.