Thanks for the info guys.
Annasea, what did you end up buying? Does Henry's sell Ikelite? It didn't come up on their web site (henrys.com). Henry's is great though, have bought stuff from there in the past and they're good about matching prices.
Deepdiverbc, what housing did you buy? I'm curious in general about what others have gone with. I'm debating a Canon G9 (with the knowledge that a new version of this may be coming soon) in the Ikelite housing or buying a housing for my 20D (plus a macro lens), and paired with a single (to start) DS-51 or DS-125 strobe (big price difference!).
The Edge sounds good, esp if I can get a hold of this Mike fellow. It's less important that they have it in stock than that there's someone there who knows their stuff and can recommend a set-up that works for me. I'll look into it there.