I have a Sous Vide Supreme[1] and it's pretty much the secret weapon for making cheap beef tasty. Even cheapo chuck can do really well in one of them if you let them go for a while. What's nerdy-cool about it, I think, is that if you're quick, you can seal a steak with no air bubbles whatsoever and the steak will remain bright red while it cooks. Obviously you sear it after, but watching people's eyes bug out a little when they see the bright red slab of perfectly tasty and cooked meat come out of the pot is kind of amazing.
[1] - I also have an Anova, and if you can swing it I much prefer the SVS; with the Anova the temperature gradient can be pretty wide in larger containers, and you don't have to be nearly as careful about how you place stuff in the SVS.