Help me choose a spearfishing/freediving cam?

[Amphibious]

so Im in the market for a P&S style cam that can take HD Vid. here are the musts:

1. Must be good in low light (artificial light sources illegal for spearfishing here)
2. Low profile, this is for Freediving only, so drag is an issue.
3. Camera & Housing under $800.
4. Must be waterproof to 130'


I dive in BC water. our waters are very cold, dark, and green. to give you an idea of the conditions:

YouTube - Jesse at Browning Wall
YouTube - Browning Wall

that's about the worst conditions I'll face here.


I am looking hard at the ZS3 & the ContourHD currently. 90% of the time this will be mounted to a speargun for gun cam footage, but would the like the option of taking the odd big of non-spearing video (making a mounting plate with handles easy with my available tools/machining), the ZS3 is winning out so far, as the zoom features are very interesting to me with dry photography...

here is the general idea behind a guncam:

http://www.speargearshop.com/public/images/products/large/cameramount-eu-03_lg.jpg

YouTube - Spearfishing a bronzebream with a mounted speargun camera


so...... whatcha think?