CompuServe Messages

I have been offered an upgrade from my current copy of Comptons Multi Media Encyclopedia (v1.01) to their new Comptons Interactive Encyclopedia for $150. Can anyone give me their views on this version and if upgrading is worthwhile. I am not looking for any "serious" academic tome and am happy with the level of the CMME. Its target users are 7 and 4 with the odd look by myself. Steve