Well, I succumbed to the "bigger is better" axiom and decided to add a 16gb SanDisk Compact Flash card to my inventory.
In arriving to this decision, I was guided by two facts: the first is that the images files from Canon 5D Mark II are monstrously large and that, although my 8gb CF cards are quite adequate, I filled them up a number of times in the midst of a photo shoot. The second reason is that SanDisk was offering interesting rebates on its cards, which meant $20 off the 16gb baby I got.
After spending an hour browsing at B&H, and touching-feeling-playing with the newly released Canon 7D (it feels solid, well balanced and its 8 fps sounds really good to my ears...but we'll see about the image quality), I was told that the SanDisk Extreme III Compact Flash Card were sold out. B&H was a madhouse this Sunday...presumably all from the traffic generated by Photo Plus Expo that took place the past few days.
So my next stop was Adorama where I did find the product I needed. While the delivery system at Adorama is far from being as sophisticated as B&H's, the card and its rebate sheet were readily available. The traffic was also very impressive at Adorama, with long lines at their cashiers.