My basic preference is Customer Satisfaction.For this I am ready to make as many revisions as required without any cost or additional cost.But that does not mean that there will be numerous revisions because normally my clients will appreciate the work on its submission and in most cases they will not require any revision and will only say, "This is exactly how I required" or "This is the best job. I think there can be no better quality beyond this".My main area of interest is data management which includes such things as data accuracy, data checking, data transfers, data summaries and data manipulation.But I do not do all of it manually. I have adequate experience of writing short scripts in "awk" language to handle and support such tasks.