I agree with Beren. I think the new Celestron C6 SCT on the Adanced series GOTO mount is a better option than both of them. Note that I am talking about the 6"/F10 Scmidt Cassegrain Scope, not the 6" Maksutov made by Synta and sold by several companies in Australia under the Skywatcher and other brand names. Here is a link to the scope on the Anacortes website in the USA
http://www.buytelescopes.com/product...=4&pid=9534&m=
You should be able to buy this scope for well under $2,000 in Australia. It may be a little bit more expensive than both 5" scopes, but it offers a quantum leap ahead of both of them in performance. 1" in Aperture may not sound much, but it makes quite a difference optically without much more pain physically, in terms of setup, storage and transportation.
I have two friends in the USA that I know have recently reviewed this scope and found it optically excellent, for a mass produced scope. One is by a reviewer for Orion Telescopes and the other being a review for Astronomy Magazine in the USA, which will go to print in the near future. The reviewer for Astronomy Magazine liked the scope so much he bought it off the distributor after he finished the review. I can't add much more than that as his review has not yet gone to print.
This scope will do a great job visually as well as being an excellent entry level scope into astrophotography.
CS-John B