Punk/Bright Red Hair?

I dye my hair bright red in the front. I use Splat Luscious Raspberries semi-perm hair color, because its the only bright red dye that they sell in drug stores where I live. But it fades way too easily, and it fades uneven, and I have to redye the red every week, but it still looks faded. Does anyone know of any other brands of punky vibrant hair dye that I could buy that won't fade out so easily? I don't mind ordering online. Thanks.