i think the Vox AC4TV looks promising.. i usually opt for the pathfinder but since your budget can make it, i'd go for the the PF's brother..
tubes also seem easier to find and easily replaceable.. or i just haven't seen much on the Cub10's tubes..
aynway.. the Vox seem to be classier, that's just my personal opinion.. for aroung 4k more than the Cub10, i think it's a fair price..