A few things you might miss (for a little while) when you switch over to C::B from VS:
1.  VS style document switching - using ctrl+tab to switch to the last document is a pretty nice feature.
2.  Incremental builds - it seemed like VS was faster for compiling.  This is more an issue with gcc, maybe.
3.  Code completion - For now, C::B has a ways to go to fix this.
4.  Low maintainence - Personally, I rarely had to work around a compiler/linker problem and experienced very few crashes.  I am sure once RC3 is out, C::B will be the same, though.
5.  Easy installation - If you are new, installing mingw, C::B, and wxWidgets can be a pain... but well worth it.
I can't think of anything else, atm.  Honestly, it is worth using C::B over VS, even considering the above "problems".  It is smaller, faster (the interface), cross-platform, extensible, non-bloated, FREE, and a number of other adjectives.  After 5 years of using Visual Studio, C::B is a breath of fresh air.