The Spit Fire will be too close to the T-Struck solid, I've thrown both and there's not much difference to me except that the T-Struck reads it a little sooner. You could try the solid Jolt if the Pearl was too over/under for what you wanted it to do. If you're not opposed to Roto Grip (which is usually better for down and in) you could try a Venus or the new Neptune that's coming out next month. Otherwise, it's the Tropical Storm a higher grit surface and if it's too over/under, no polish.