Bit late to the party but I'm currently working with Sage and have used Quickbooks also in the past. Personal preference is for Quickbooks, reason being I found it much more user friendly and most importantly able to get more and more detailed info out of the system more easily and quickly. Having said that I'm not officially 'trained' on Sage and was not involved in the set up of any of the files I use so there may have been errors made in that respect which makes it more frustrating for me to use. I would say that Quickbooks is a more basic package whereas Sage has a greater scope with an extensive report writing ability ... if you know how to use it. I think Quickbooks was originally intended for a sole trader with minimal accounting knowledge (although this may well have changed over the years) whereas Sage is regarded as a 'proper accountants' package. I used to work with a guy who really disliked Quickbooks because of this. Feel free to pm me if you want more detail.