Rubbermaid Brilliance

Rubbermaid's premium line uses crystal-clear Tritan plastic with 360-degree leak-proof seals and built-in vents for splatter-free microwaving. A 10-piece set runs about $20. The clarity is the underrated feature — you can actually see what's inside without opening every container in the fridge and sniffing. The lids latch securely on all four sides, and the bases resist staining from turmeric, tomato sauce, and other notorious plastic-destroyers. They're the best plastic meal prep containers currently available, and they look brand new after months of use.