Question

Background: I use stored procedures exclusively for an ASP.NET application. I am using a DataReader to load a dataset object.

Answer 1

Single procedures returning single results (for code maintenability, simplicity and reuse of procedures) and then have one single call invoke all procedures needed:

command = new SqlCommand(@"
exec usp_proc1 @param1, @param2;
exec usp_proc2 @param1, @param3;
exec usp_proc3 @param2, @param4;");

Or you can create a wrapper procedure that simply invokes the individual procedures and call the wrapper. Overall, I say that the advantage of one round-trip is too good to be ignored.