I purchased my 1865 traveling sprinkler in April of 2012.  I have used it twice in the front yard and twice in the back.  I am not completely satisfied with it, but consider it generally good at what it does and it still has novelty for me to watch it chugging around.  There was no issue with it arriving in good new condition and having a very easy set up.  The directions are minimal but it is quite obvious how it works.  I have a lot of 5/8 inch hose and it will dutifully follow the hose around my yard. When I have several lengths of hose and to help it out after a while, I pull it up more behind the unit to reduce the effort it has to snake the length of hose along.  I think about an 8 foot radius curve is the tightest it can turn in my situation (very tall grass) without coming off the hose track.