Jeanne,
This year I'm growing Yukon Gold for the first time and one called Canela Russet. I've grown russets before, just not this one.
I know a guy in town who was going to build raised beds and try sweet potatoes. I'll have to see if he actually does.
Tubs sure would be a nice way to harvest them. Digging comes with the risk of stabbing, but you just eat those first.