There are enough differences between them all that you really need to start being specific in order to compare.
In general though, wired still is the preferable way to go, unless the issue is mostly difficulty/expense re-wiring a home/viewing space.
Tell us which products systems you are working with, and we can go from there
How many of you think wireless AV transmitter & receiver work? They can really as replacement of STB? I don't know whether its function of transmit AV signals is good. Any of you have using experience?