From Longman Dictionary of Contemporary Englishon balanceon balanceTHINK SO/NOT BE SUREif you think something on balance, you think it after considering all the facts I think on balance I prefer the old system. → balance
Examples from the Corpus
on balance• On balance I think it would be better to cancel the arrangements.• On balance, it's a useful program, despite the problems.• Students have been very responsible, on balance, when choosing courses to provide a broad education. 