Spaceman,
Here is a very quick and dirty explanation of the two and the differences. Also, if you tell us what you are trying to do with them we can further advise what you need/want.
PowerBeyond (PB):
This is a connection, usually at the rear of the tractor for powering implements with their own valves, like logsplitters and backhoes. This connection consists of two hoses-one is pressure/flow from the pump, and the other is a return to the sump or 3PH in most cases. There is flow in these hoses whenever the tractor is running, so they must be connected together anytime the tractor is running-hence the term "power beyond loop". There is NO valve or control on the tractor to control the flow.
Remote:
This is a connection at the rear usually, that IS controlled by a lever, it's use to most often control DA (dual acting) hydraulic cylinders on implements like blades for angling, or on the 3HP for controlling a TnT setup (Top and Tilt). One remote constists of one lever, and two QD's (quick disconnects) to plug into.
Hope this helps clear up some confusion...