- List item speed is same, but MsTest may be a bit slower because it creates folder for test run every time
- MSBuid and CC.Net is big pain. You can’t run MSTest on computer without VS on it (not 100 sure about 2010, but with 2008 it is so)
- not sure, sorry
- yes you can, from visual studio
My recommendation is following: if NUnit satisfies you – use it, forget about MSTest