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If you think the 9007 is bad, you should drive a vehicle that takes the 9004. The 9007 is the "improved" version of the 9004 and is, in fact, designed the way the 9004 should have been all along. The 9007 has axial filaments, whereas the 9004 has horizontal filaments like the old sealed beams used to have.
If you're getting poor output and a poor beam pattern, it's simply a poorly designed lamp. The 9007 itself is a well-designed bulb. For an upgrade, I'd choose the GE NightHawks over SilverStars.