Sound card for laptop? No more usb!

I have been answered on my 24bit question but......
I have a laptop(P4 2.66ghz 256mb of DDR ram) My question is..
I have tryed USB audio cards(Tascam, and M-audio USB Mobile pRE) and they suck as far as latency goes, Does anyone have experiance with CardBus SOund Cards?
Echo Makes a Indigo I/o CardBus 24/96 audio card, and they say it has great results with Cool Edit Pro 2.1 as far as latency goes.
Does anyone record on a laptop with a cardbus sound card?
I tryed it like I said with a USB audio card but it was so much latency and not on input cause they have direct monitoring, it was on play back.
All my tracks were way off.........
Since I have got rid of the Mobile pre and am stuck without a card....
Any help is awsome thanks.
-Reco