If you search here you'll find a few threads, and there's also a very active Yahoo group for Alfa owners.
We were also attracted to the high ceilings and pricing fo some Alfas, but in the end concerns about skin delamination and cooling (it blows cold up up from the floor, rather than down from the ceiling, unlike a Winnebago with basement air) had us looking elsewhere. Out Summit embodies many of the things we liked about the Alfa, and actually appears to use the same windshield glass!
The Green Machine -- 2000 Mountain High Coachworks Summit (Spartan chassis / Cummins ISC)
...and F-Troop: Fearghus, Fiona, and Frankie (Cairn Terriers)