Hello 
1. I've read in wiki that CHDK is compatible with SD700 IS with these firmwares: 1.00b, 1.01b, (1.01a with CHDK version for 1.01b). I would like to know whether it is possible that I'll buy a sd700 with such a firmware that it will be impossible to use chdk (in other words are there firmwares like 1.04 with no downgrade option).
2. AFAIK SD/IXUS series do not have shutter priority (nor aperature). Does shutter override work like shutter priority - that is, camera tries to set best aperature given the shutter value? Or is it full manual?
PaulPS. Does sd700 have any significant flaws? : P