what's the coolest 4-seat convertible i can get used for under $30k?

early research is leaning towards the bmw 4 series or an audi a5... but wanted to open this up to the experts on reddit.

would love higher gas mileage and decent cargo space, as this would be a daily driver. replacing a hybrid hatchback with 50mpg. will obviously be sacrificing some of that gas mileage here, but - wanting something that's a little more impressive than a hyundai.