I am looking to buy a simple point and shoot until I can buy a decicated housing and strobes for my digital SLR. I am trying to decide bewteen the sea & sea 860G, the sealife dc600, and and one of the canon sd series, either the 800 is or the 900.  very limited informnation is avaliale for eithe the sea & sea, or the sealife, can anybody help me out .