Ciena ONT's are (or were) more expensive then Calix ONT's, so we switched to them. But I think I preferred the Ciena equipment. In regards to switching, Ciena was fine for our needs but we didn't try any Calix equipment, and when I left they were in the process of vetting the Brocade switching equipment. Brocade was cheaper then Ciena as well, and we were already using Brocade CES's and CER's in our ring architecture.
There are quite a few options in regards to outside plant equipment. I would suggest you take a look at what may be available in your area to go see, and talk to technicians that have used other equipment as well.
When we were building out our network I think they used the Fiber to the Home Council as a good resource, here is a link to their toolkit for the Texas area. It may give you some people that you could talk to as well. Especially in regards to local contractors for pricing of outside plant, or if you plan on hiring all your own employees, the equipment to maintain the fiber and such (conduit, fiber, Fusion Splicers, OTDR, Splice Trailers, etc.)
»www.ftthcouncil.org/p/cm/ld/fid= ··· /fid=156