Hi Warren, If you are asking because of potential job prospects, I would say that
you should be going for SCWCD. I am only taking SCBCD to practice for the
SCEA. The SCWCD is also a good intro to the J2EE deployment descriptors and security which is a good precursor to both the SCBCD and the SCDJWS. However, this is only my opinion and others may live in areas where SCBCD is more marketable and disagree.
HTH