Just bought mine too.
Also bougth 2 Transcend 8GB Class 10 cards.
I choose 2x 8GB cards instead of one 16GB card because it is more practical to have 2 cards, and the 8GB size is the ideal size for 1h at HA quality and fits in a double layer DVD to play in my PS3.
I came from one Sony Hi8 tape camcorder and the IQ is so huge
Just did 15 mim footage in the school party of my children, with all settings in auto mode, just changed the video quality to max quality ... HA I supose, and then at home I inserted the SDHC card in my Panasonic TX-46G10E plasma TV and the quality is wonderful.
So easy .... so simple .... so good.
I was also undecided between the SD60 and the SD600, but for me the price diference doesn't worth the difference (+60%), mainly because the differences are in the manual controls that I usually have no patience for use
Yes 3 sensors can give you better IQ but this is already very very good IQ at HA.
As to the light being auto ON, I think that feature can be turned off in the camera options. Take a look.