Even with waiting for luggage, I feel the expedited service is well worth it and does save time, for me it mostly saves the frustration of standing in line (a terrible character flaw, but hey, what can you do?) I've waited on luggage in three of the last four trips... the last two I was worrried my bag wasn't coming out at all, but with the new customs cards, it seems even faster as there is a designated agent standing and waiting for CMB guests. Basically you hand your card to them and they wave you through, easy! I am a strong supporter of CMB, but understand how others are not as interested. It really is depended too on several factors, as you know! I usually travel in late April, and recently added late June.