I first purchased a Ross Root feeder back in 2000 or so.  I still have my original purchase - and I am still using it.  Since I have a lot of trees in the yard, I purchased a second unit a few years ago and both my wife and I would take a set of trees and deep root feed them.  After the second unit broke, we purchased what we thought was an identical unit.  The name has changed with the new HD title, but the unit looked the same in the pictures.  Wrong.  This latest unit has very low water flow, so the fertilizer does not dissolve.  And I am always having to unclog the holes where the water comes out.  I just hate the changes that Ross has made to the design over the last 10 years.  I understand that materials change and costs must come down, but the usefulness of the end product should not be compromised and it has been compromised greatly.  Now, I am going to continue to use this one, but when it breaks, I will probably just buy another brand next time.