I use the MTH terminal block. It is designed for simple installation, as the hot and ground connections from the TIU are already separated and connected to the terminal block, so that one side of the output connections is hot, and the other side is ground. With a normal terminal block, you need to add jumper wires between the output connectors.
I also found I had significant signal strength issues if I used more than 9 track drops (connections to the track) from one terminal block. Each terminal block is connected to a separate TIU channel, so with 4 channels, I have about 36 track connections around my layout, which is 11x22 ft, twice around the room main line with two 8 ft long yards off the main line.
