We are replacing our current EoC connection with Comcast cable. Also we are bringing in RingCentral cloud hosted VOIP. The only element that we have to choose is securing our network with a firewall. I was thinking SonicWall. There are different flavors of SonicWall and I would like to choose something that is simple and does a good job protecting our small network of 40 computers. Do you experts have any recommendations from experience?