So far so good! I purchased several sets for our new home.  When unboxing the first set I accidentally unwrapped it the wrong way which tangled the entire string and took over an hour to get untangled!  The second box I carefully unwrapped the end and it was easy to just string up properly.  I haven't seen them in action yet as I put them up on trees at new house during the day and haven't seen them at night.  They look like they will be great though.  Ended up buying an additional set for more coverage!