Well, ExpressCard comes with either a USB 2.0 or PCI-Express interface, the USB 2.0 version being only half the speed of Cardbus. I don't know which ExpressCard versions have been introduced this far on other laptops but I suspect that many of them might use USB 2.0 and some are probably not available on the laptop itself but on docking stations which makes them far less appealing...
Anyway, lack of ExpressCard connectivity and the Azalia 7.1 sound chip are the only reasons I still haven't bought a laptop yet even though I'm torturing myself with a noisy desktop P3. The best ExpressCard setup would be to have one large PCI-express module for high-def TV-tuners and the likes and a small USB 2.0 module for removable storage media

If the i9300 had these features it would be a near perfect laptop for me, as it is I'll have to wait some more...