Well, this review is going to be 2 fold, and also a work in progress. When looking for a solid sump pump option that wouldn't break the bank, I came across this liberty pump 257 1/3 horse power pump on Amazon. I had never heard of the brand, however that does not mean a whole lot since this is the first pump I've ever bought. It has really great reviews on Amazon.com, which to me was a sign of a good deal and good quality. When something has over 100 5 stars, and only 2 1 stars, I assume that is a reflection on the products quality. When the pump arrived, it was a breeze to hook up and get running. I was honestly amazed at how quiet this pump is when running. I could barely tell whether it was pumping or not, even standing in the same room. I also replaced the check valve at the same time, which probably helped the lack of noise as well. Also, the pump zipped through all the ground water around the house. After just about 10 minutes of running, after an extremely large rain storm the day before, there was literally zero water left coming from the inlet pipe into my sump pit. So, for the first 6 weeks of use, I had been extremely pleased with this purchase. However, about a week ago we had one of the biggest down pours that I could remember. It was the middle of the night, and I was woken up by the lighting, and I decided to run downstairs to check on a small foundation crack leak that we are dealing with currently. Its only an issue on very heavy rains, which this was, so I went down to see if I had any problems to deal with, and I actually did have a small puddle forming from this crack. However, I saw the that the sump pump was working, so I was happy about that. While I was toweling up the water from the crack I noticed that I didn't hear any water running through the sump pump discharge lines, which was how I could tell the pump was running, since the pump is so quiet. I went over to my sump pit and I saw through the check valve that there was no pumping going on, and also the sump pit was starting to fill with water. The pump was definitely powered up and "running", however it was not pumping any water. After a quick panic, I realized I had a small backup pump from Walmart, that I hooked up as quickly as I could, before the sump pit overflowed. Thank god I had this pump, or I would have had a basement full of water very quickly. Always have a backup!! After getting the backup pump running, I turned my attention back to the Liberty Pump. I turned it over and saw the problem immediately. The impeller had completely come lose and was just rolling around inside the cavity between the pump housing and the bottom plastic plate. After popping the bottom plate off to get a better look, it appears that the impeller just completely came off the shaft that connects it to the motor. I dont know if a nut came off, and then the impeller got looser and looser until completely falling off or what. But I had only used this pump for 6 weeks at most, and this should not have happened. I am extremely lucky I just happened to be downstairs dealing with the foundation crack leak when the sump pump failed, or I would have definitely woken up with a basement full of water, from this Liberty Pump failing. Amazon is replacing this pump free of charge, and I am going to try and stay optimistic that I just got an atypically bad pump from Liberty, since so many others have posted such great reviews on this pump. I will try to update this review after a few months of using the replacement, hopefully with no problems. Lesson learned: ALWAYS HAVE A BACKUP!!