Product review (4 stars): Quality saddle valve
This was for a little project of mine.  I believe saddle valves are not to code so beware.  The valve and fittings work and don't leak.
My one complaint is about the valve handle.  It is a pain to turn, by hand, when it starts to tighten up.  Not a big  issue if your only turning it for repairs.  I was using it often.  I would recommend for the person looking to do their own DIY projects.