The following factors may help you choose between an on-line search prototype or a batch prototype:
what was the main purpose for evaluating or purchasing SSA-NAME3 ?
how quickly does the prototype need to be delivered?
where are the analyst/programmers skills?
For example, if the main purpose for using SSA-NAME3 is for batch file matching, or the prototype needs to be delivered quickly and either the analyst/programmer does not have on-line skills or the on-line environment is difficult to build in, then a batch program could be the right choice, otherwise an on-line program is usually more interesting and the results are easier to present to others.