I have lots of Victoria rhizome still. Columbus is pretty much spoken for and Cascade has a few people lined up wanting some. I still have some Cluster left, with a small amount I can still dig up of it.
Victoria has the most fruity flavour out of all of them. It is a full sister of Galaxy. Most people seem to want Cascade through word of mouth or something. If I had to choose only 1 variety, and the pick was between Victoria and Cascade, I would definitely grow the Victoria. You just need to make sure you dry Victoria very well before storage and it seems to like a very pale brew to highlight its flavour best.