Meguiar's Gold Class Endurance High Gloss Tire Protectant Gel. Applied correctly, it won't look greasy, and it won't streak if you let it sit for a day after with no rain before getting wet. Has a lot of longevity. A little goes a long way - I've had my VX over a year now, the same bottle of Meguiar's just about the whole time. I used to apply it a bit more often, but now that I have the hang of it, I don't need to. I just now need to get another. Haven't tried the Mother's because I haven't had any reason to switch.