jsp:forward vs jsp:redirect / XML tag if

[lse123]

 <jsp:redirect page="displayquote.jspx" />
Above used always get error... used always prior any code or? 
may replace the
 <jsp:forward page="displayquote.jspx" /> 
in all cases if we have session bean[DTO]?

May include(how?) the boolean expression
//  session.isNew() at below:
  <c:if test="${choice.contents}">
            <jsp:redirect page="welcome.jsp" /> 
  </c:if>
???

[Tolls]

??? indeed.