.....using the storage for just that. I have the FlashTrax, and there are problems viewing some files. Tiff's are not viewable ( at least with my firmware update - this may have changed, but I don't think so ), and JPG's load somewhat slow. When I first bought my FlashTrax, I thought it would be great to let the models see the images after the shoot, w/o having to lug the laptop to the shoot. I now see this as a cost of doing business, so to speak.
I believe a laptop is best if you need to view images. One thing digital has taught me, the screen on the camera, and the slightly larger ones used in these type devices, only "really" serve a purpose for framing and composition. Which are really what they are intended to do. Yes, one can use the histogram function to see what the exposure is like, but if you shoot on manual, and understand lighting, unlike most people shooting today, this is a non-issue. Remember, I'm answering this question for the great, Andy Pearlman, who I would bet, does not shoot on Program!! I also own an older model w/o the screen, and too be honest, I think it is much easier to operate.
As far as cards, I use a WA 1 Gig card made by Lexar, and have been very happy with it. They had a bit of an issue with compaitibility with my D1X when they forst came out, but I think those issues are now resolved. I had to ship my card to Lexar for service when I first bought it, this was to fix the above issue. Every since then, it's worked fine.
Hope this helps.