I think most people in this Country would recommend a Humber or a Ribcraft... or indeed several others above a Zodiac. I'm sure Zodiac are fine boats but we have some pretty horrible weather in the English Channel so UK manufactured boats tend on the whole to be built to be sturdy and hopefully a softer ride with a deep V hull. There are other makes too like Delta or Ribtec. Take a look at the links page on the ribnet site.
As for what’s best between Humber and Ribcraft, there has been much discussion on the subject recently. I suggest you do a search for the two names on this forum. Ribcraft have now franchised to an American producer but I think they are on the East Coast somewhere so still half a planet away from you! Check with Ribcraft!
Alternatively, send me a PM or e-mail and I'll give a few more views!
I expect a ride next time I go to the Aloha State!