Thanks for all the replies and the good info. From what it looks like, get a carbon if it's in the budget and you're going to ride it pretty often. Other than that, steel makes a fine tandem. This tandem will probably just be a back-up bike for us, riding two to three times a month, so unless the deal is good then it have to be a good deal to upgrade to carbon.
Thanks for the input and pics,!
Jerry