it depends on your requirement.
for me, I will choose 30D for it's functions such as 100,000 shutter release guarantee, spot metering...
which others may think these useless
Thanks for your advice. But checked on the cost for those DSLR. I think 400D is quite attractive. So I ask for a better value for money. Actually, I want to buy a full frame camera first, but I consider there will be a price drop (I strong wish that within this year). So I think is time for me to buy a lower price one and use it to take the long focus items (with 1.6X) then a full frame one for the wide / medium range.
Futhermore, do you have any idea for the different between Digic II and Digic III?
quote from other site :
From the press releases.
"Canon’s DIGIC III (DIGital Imaging Core) image processor manages all of the camera’s primary functions to optimize operating efficiency. Advanced image processing algorithms deliver superb image detail and colour reproduction with accurate white balance. Key improvements over DIGIC II include markedly faster response times, advanced Noise Reduction Technology and support for Canon's Face Detection AF/AE technology. DIGIC III also enables the PowerShot G7 to support DDR-SDRAM, effectively doubling data throughput rates for even faster performance."