The best replacement for soundgarden is audioslave.

The best alternatives to soundgarden are rated as following:
★★★★★  audioslave
★★★★★  nirvana
★★★★  pearl jam
★★★  alice in chains
★  stone temple pilots
★  smashing pumpkins

Your alternative for soundgarden is not listed? Suggest!
Speaking about soundgarden, one probably shouldn't forget about chris cornell.

Other search terms related to soundgarden and their ratings are:
★★★★★ chris cornell
★★★★ pearl jam
★★ nin
★ eddie vedder
★ matt chamberlain
★ matt cameron
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Google Trends

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soundgarden
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