Get the big one.  You can never have enough hot beverage.  Coffee, Tea, Hot Chocolate, Matcha, or what ever floats your boat.  We all need a good hot beverage

• Ceramic
• 11 oz mug dimensions: height 3.85" (9.8 cm), diameter 3.35" (8.5 cm)
• 15 oz mug dimensions: height 4.7" (12 cm), diameter 3.35" (8.5 cm)
• Lead and BPA-free material
• Glossy finish
• NOT dishwasher or microwave safe
• Hand-wash only