Hi Al (& welcome!),
Two of the Keystone 5th wheel lines were re-named (& re-designed?) in early 2010 -- the 'Avalanche' was previously called 'Challenger' [& the 'Alpine' was 'Everest']. As a result, there's only recent owner/buyers to compare notes with, and there may not be any Avalanche owners here 'yet'.
That said, our previous 5th wheel was a Challenger, and we loved it!
In reference to locating Keystone dealers close to your area, check here:
http://www.keystonerv.com/?page=locator
Avalanche dealers here:
http://keystone-avalanche.com/index....d59337df259dff
Mesa RV may be able to refer you to a dealer; and with their southern AZ location (snowbird area) they may also be familiar with the paperwork process & requirements for Canadian residents buying in the U.S.
Good Luck!
Terri, the co-pilot