What are the differences between using Beyond with a QM2000 and with a FB3?

There are no differences in the software and its capabilities, but there are some differences in working with the hardware when controlling multiple projectors and when networking.

One of the great features of Beyond is that it can control a virtually unlimited number of laser projectors simultaneously. Each projector will need its own QM2000 or FB3. You can buy these separately. To do so, purchase an LD2000 Intro system (NET) or a QuickShow system (FB3). Then, use just the hardware. (Of course, you can also use the software that came with LD2000 Intro or QuickShow. This is handy to run additional, totally separate, installations.)

A Beyond multi-projector system can use any combination of hardware -- all QM2000s, all FB3s, or mixed.