As an owner of a voyager top if you are thinking of anyone other than very small kids (2 small kids is tight) sleeping up there then you really really need to try one out.
The pop top is absolutely the way to go if anyone will be sleeping up high. I know adult couples who can sleep up top with the pop-ups and as a reasonably sized adult I barely fit in the voyager top by myself. And this is with no foam padding on the bed boards (use a backpacking sleeping pad since it is thinner).
The voyager top is great for gear storage and my 12yr old will sleep up there sometimes but he is thin and fit and still doesn't feel like there is enough room.
As for floorplans I am really happy with the mod'd 71 variation SMB West did for Disabled Explorers, and the extra EB space is worth gold!
check out sportsmobileforum.com for other owners who might be near you and of course the great folks at Sportsmobile West are happy to chat (I wore them out picking brains)
cigar smoking, wilderness first responding, ham talking night nurse who is overland certified and a fellow of the Royal Geographical Society.....
now everyone say "so what where have you been lately?"