Yep, you can definitely use Rubbermaid Brilliance containers in the microwave. The manufacturer makes these from sturdy Tritan plastic, and they're BPA-free, so that's a plus. Just keep in mind to follow the instructions, especially about the lids, to keep them in good shape.
From what we've found, people generally like how these containers hold up, even when moving from the fridge straight to the microwave.
They're pretty handy for heating up leftovers or making a quick meal.
Just be aware of a couple of things: the lids can be a bit tough to open, especially if you don't have a lot of hand strength. Also, if you're storing long items like spaghetti, you might need to break them or use a different container since these might not be tall enough.
Overall, they seem to do a great job keeping things fresh and organized, and their see-through design makes it easy to spot what's inside.
Just keep those couple of quirks in mind, and you should be good to go.