The REALLY nice features of both the CP5000 and Dimage 7 is their 28mm, that's INVALUABLE if you're serious about photography.
I've got the Dimage 7 and use ColorFix ($17) for batch conversion to sRGB, after trying like 20 cameras, this is probably the best you can get for your money at this point in time, the 28-200mm lens is absolutely fabulous. Only problem (same for all 5mp CCD's) is the noise, but it's not noticeable under 20x30 and there are ways to fix it.
The only possible upgrade is the Canon D30 SLR but that's $2.5k with a good lens.
The CP5000 is much more compact, but probably not compact enough where you'd have it with you all the time like the Option 330 for instance. I can't really think of stuations where you'd be able to carry the CP5000 and not the D7.