I believe that the grips on your club are the most important part of you swing and clubs.  The correct feel and size is so important.  We have such a choice, I encourage you to explore and find what works for you.  I know that real rubber grip absorbs the shock and allows me to feel more and hit a better shot.  I like a tacky and sticky like feel for missed shots so as not to have the club turn in my hand exaggerating the miss.  The correct size allows me to release my hands properly.  Too big I fade, to small I hook it.  So explore what is right for you and see and feel the difference.!!