This is a great shower head.  We had a really expensive one that did not have the rubber nubs and we have somewhat hard water.  After 8 years, there were only about 20% of the sprayers working and that was after using CLR and constantly cleaning.  This has a nice water flow, easy to clean and has a pivot to angle the water if necessary.  Even better, when you turn the shower off, no water dripping!!!  After a few minutes, it releases excess water but it is nice to not have cold water dripping down after you turn off the faucet.  I highly recommend!