I have been using ONRES Systems for the last 10 years and it is the best configuration for my 5 unit building of vacation rentals. Steve and his team offer one of the best Customer Service levels I have rarely experienced, with prompt, efficient and friendly responses to any system issues one may encounter. The 1.0 version works best for me, with my small property, however the 2.0, has enhanced an already very user-friendly program for additional needs a property manager may have. I hope that more people give this system a try for their properties. You will not be disappointed, as I have not been in the last 10 years.