I purchased the 48x20 in May 2014 ,and I tell I could not be happier.!!! I was able to pick it up myself to save on shipping, it weights about a ton, well built, solid welds through out, with a lot of extras, the guy Ken is a master at his craft. I worked with the sales Rep Ryan S. all around great guy, he kept me up to date on the progress of the build, after completion Ryan will guide you on how to operate this unit ,and how to achieve great results, happy I got it !!!!! Like someone said in a earlier post it's like cheating!!!!!!!