i use aquatica and am very happy with it.
I would suggest one thing with housings. you are buying into a system, 3 or 4 years down the road you may want to upgrade your camera (everyone says they won't but they do...) When you buy a housing system you can transfer those ports from your old housing to your new one.... etc.
Will Fantasea still be in the DSLR category 5 years down the road? not sure....
But you def get better options with Ike, Aquatica, S&S etc for your D70.. things like gears for all your lenses, extension rings, port systems etc etc...
Does Fantasea offer that sort of support? I don't know... but is something to look into before buying