Light and fast (compared to AutoCAD)
Quick load times
Able to handle large infrastructure projects without slowing down.
Power reference (xref) abilities
Power geometry tools for creating accurate and "self-healing" roadway layouts
3D visualization tools built in
Civil Cells = Dynamic blocks from AutoCAD on steroids.
Ribbon menu system is cumbersome
No default keyboard shortcuts making switching between tools slow and cumbersome
Use the AutoCAD colour table, it has more colours, better colours, and makes working with the rest of the world easier.
Annotative text/dimensions setup is useless for roadway drawings. Scale changes of 1:1000 to 1:500 are too large for Microstation's implementation to work. AutoCAD is great for this.
If you are working on large complex projects, Microstation is the better overall product in comparison with Autodesk. I say this as a user of both. However, it is not perfect and there are plenty of great features in AutoCAD that are not present here. I just feel that the pros outweigh the cons, in favour of Microstation.
We are using Microstation as a drafting tool for InRoads/OpenRoads designed projects. For roadway drafting it is more robust and a better overall package. For bridge structural drafting I prefer AutoCAD.