I have used this tool to demo a flagstone/concrete patio and about 80 feet of sidewalk.  I first tried the sledgehammer/prybar route, but that was too slow and tiresome.  I got the job done by myself in less than 8 hours with this tool.  It is quieter than gas/air powered hammers, but I still wore ear protection.  It is easy to operate and not very fatiguing-the most tiring part is picking it up and setting it down.  It is heavy, but I could lift it into the trunk of my car by myself.  With 2 people lifting it is a breeze and the cart makes transporting it very easy.  I ran it hard all day and it never complained- and this was a pretty beat up rental tool.  I highly recommend this tool if electricity is available-it is much more convenient than gas and compressed air hammers.  Plus it is powerful and durable enough for all but the biggest demolition jobs.