+1 to the Kelly SHU. I use it on my own personal kit and I love it.
I also added an XLR port to the side of the shell so that the engineer can just plug a mic cable into the drum without having to go fishing through the port to try to plug in the mic. But that solution may not be for everybody.
It's not shown in the pictures below, but I also use the Evans internal mufflers that velcro to the shell to prevent it from sliding around during handling. Internal kick mics can sound like a rubber dodgeball being bounced on the floor without some sort of dampening in the drum.