Continuum. And yes, there are upgrades for the TR machines now. I'm far to poor at the moment to even look into them, I think. Been having absolutely horrible RNG for Diamonds and Gold. For a while there I actually had more diamonds then gold, though not enough of either to do much of anything. At this point I mine, mine, mine, mine, come back and use the 3-4 diamonds and gold ores I get to make a thing, then spend the time waiting for the rest of my spoils to process to build something pretty. Rinse and repeat.
I've heard bees are a very good thing to go into.