In my previous post (where I quoted you) I guess I was looking for more of an explaination of the major differences you eluded to. What do you think makes them "very different?"
By the way, I would like to have a great zoom AND portability.
They are very different for the following reasons:
SD970 series is a compact P&S that has limited zoom range
SX1 is fairly bulky with a large zoom range
SD970 will typically more problems with red eye and less flash range
SD970 will have few/no manual controls
The SX1 and SX10 both go to a wider focal length and have a lower F-stop
The SD970 has a slightly higher MP count which may lead to higher noise at high ISO
The SD970 also has a better LCD display but lacks a viewfinder,
SX1 does full 1080p movies, SD970 does 720p
SX1 has better macro and longer battery life(but takes AA instead of a rechargeable proprietary battery)
The SX1 is $200 more expensive than the SD970
I think those differences qualifies it as "very different"