Now how much does that video BALUN cost? and now you just need to buy the BALUN transmitters, not the receivers.. can you buy them this way? i though they only come in pairs.. that unit is also just for the video and power, it would not work for PTZ control or audio, so it kind of limits you, if you want even 1 PTZ or audio camera, now you need a separate power supply, or wire.. i definitely think the BALUNs have their place, and its nice to know whats available for certain installs, but i'm not sure that you would completely go this route for all installs over RG59 Siamese..
i just had another thought, you now have to hide that BALUN outside (by the camera) on the customers house, not sure (in some cases) it would look as clean as just having the RG59.. most times i am able to have the RG59 hidden behind the corner molding on the vinyl siding, not sure the BALUN would fit behind that molding. also, i wonder how the BALUN would hold up in the snow and heat from the sun.. i think i like rg59 siamese for video and power, and a run of CAT5 for microphone and PTZ.. thoughts?