Highly recommend both (not sure what the G11 is like)
If you want to be able to change lenses and use GND/Polarising filters the 1000d is the go
if you want to just pull it out of your backpack/hand bag and go snap the G10 is the go
What i find annoying about using the G10 on auto is sometimes the computer takes over and you get a bad shot while it tries to do face recognition and red eye reduction and all the other crap at once, you press the shutter and the subject has moved before it takes the shot (like a phone camera) and sometimes it uses the flash for no reason over exposing (i think?)
However, you can set the G10 to manual like a DSLR. it has all those dial thingies ( sorry i am no photog)
In bright conditions using the LCD can be painfull on the G10 (poor viewfinder)
Zoom is limited on the G10 (compared to the older G9)but you can buy a 2x lens
The DSLR is mainly up to the photographer as mentioned above but you can put it on auto like a point-and shoot too. ( which is what i do mostly)
I need to do a course eh!
thats my 2bob worth, hope it helps
here are some pics
G10
1000d
