I'd vouch for Aquatica......Had one for a couple months and absolutely love it. Bullet proof. Looked at and chose over Ike. Ike only has a 6" dome, Aquatica has 8". I have heard there may be some differences, but don't quote me.......Aquatica's port system is bayonet type, I really like that versus the clips Ike uses. Ike's bulkhead is on the back, my concern is it gets in the way unless you find a way to route it correctly.
Sea & Sea and Ike were a bit too big for me as I travel some. The Ike D70 housing is a monster, same with the Rebel (IMHO). Sea & Sea worries me since they got out of the US market and left it all to Tusa. Although I saw a S&S D70 housing this weekend and it looked very nice. S&S ports will also be significantly more than Aquatica ports which, while acrylic, are rated very highly.
Buy Subal if money is no object.
I doubt you could go wrong buying any of these housing, just need to choose based on your priorities.
If money is the main priority, then Ike, Aquatica, S&S and Subal, in that order.
If quality, then (IMHO) Subal, Aquatica, Ike/S&S in that order.
If customer service/access to manufacturer, then Ike, Aquatica, S&S and Subal (simply geographically and based on my and others' experiences). H20 phtot pro seems to have insight on dealing with S&S, but since they left the market, that concerns me.
As for waiting for the 10D, why? the new 10-22 lens can't be used with the 10D, only the soon to be out 20D and the Rebel (and the rebel can be "hacked" to regain many of the 10D functions - no endorsement, just sharing facts)
As for TTL, most people I know shoot all manual strobes , and even those that go to, for example, Steven Frink's photo school, are shooting manual by day 2 (even those with S2s giving real ttl)
Anyway, YMMV, etc etc.
Chris