I'm planning to get whiteline bushings if I have leftover monies from taxes, that is if I don't owe. The legacy suspension is set up differently than an impreza, so the bushings ill get for my car will be different than yours. But, to answer your question, whiteline make a good bushing from what I have heard and read. You can also check out TURN IN CONSEPTS. Ther have plenty of other manufactures for bushings as well as other suspension components. Generally speaking, anything polyurethane will outperform rubber In terms of the stiffness and give. Where as the rubber ones are designed with more comfort than aggressive handeling, less NVH. As for other brands besides whiteline? That I don't know off the top of my head. Possibly a quick web search will warrant some results. I'd say the most common ones you will find are the whitelines though.