RE: What is the difference between Power InRoads, InRoads or Suite InRoads???

Power InRoads is approximately the equivalent of InRoads Suite with MicroStation. The only visible difference is that Power InRoads combines the InRoads menus on the Main MicroStation menu while all of the InRoads products that run on top of MicroStation, add an InRoads menu under Applications and all of the InRoads menus are housed there.
Power InRoads is cheaper than InRoads Suite and MicroStation, but the Maintenance fees are slightly more.