I have been using this yarn for awhile now. It is so soft and works up beautifully. The colors are gorgeous and they keep adding more. I am generally not a huge fan of self striping yarns, but this has changed my mind.
The only negative I can think of is that it pulls apart/breaks rather easily since it's a loosely spun single ply. A tight knitter may have issues with breakage. Once it is knit up it is very sturdy though.
I've ordered this yarn several times now and have enjoyed the look and feel of it. However, the last two I ordered have seemed to be poor quality. I'm fine with the yarn being slightly thick & thin, but these had very thick (roving-like) areas and very thin, thread-like areas that made the yarn completely useless for my intended project (it even tore apart when I attempted to frog it) :( I'm a little nervous to order more in case I have the same problem.
I enjoyed working with this yarn except for one thing: the irregular sizing of the yarn itself.
I don't mind when it got super fat for a while as much as I minded when it got thin as thread in some places.
I have to say though, the FEEL of it is wonderfully soft and delightful!