Hello - I am currently using the ISY 994 with firmware v.4.7.5.  I see that there is a firmware update to v5.x.  My question is - is there any reason or benefits to the upgrade?  In the ISY cookbook description it says that you may need assistance with scene setup in v5.x, so I am assuming that it is pretty different from v4.x.  I can manipulate my scenes fairly well right now, but I am not a hard core programmer. There is always a risk of things getting mucked up when upgrading, so just wondering if there are any benefits for someone at my medium level of programming.