Your Subaru suspension includes four struts that not only dampen suspension movement, but also are a critical load-bearing part of the suspension and steering. The stock Subaru dampers are good, but an aftermarket item will have extra features above and beyond what the OEM strut offers -- some, like the Koni yellows and the KYB AGX, have adjustable damping, for example.
If it's just a budget replacement strut you are looking for, the KYB Excel-G for Subaru WRX provides a factory ride quality, but at a value price.
Terminology note: A shock absorber and a strut are basically the same thing, but a shock absorber (or just "shock") is not a structural or load-bearing part of the suspension, and a strut is. For our purposes, we sometimes use these words interchangeably, but technically all Subarus have struts, not shocks.
5x114 GR GV Racecomp Engineering shocks
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5x100 GE GH GR GR-2 GV
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5x100 GD
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5x100 GG
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5x100 GR-2 SG
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5x100 5x114 BL BM BP bumpstop GC GD GE GG GH GR GV SG SH SJ VASTI VAWRX
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5x100 5x114 BL BM BP GC GD GE GF GG GH GM GR GV SG
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28313AG020 28313AG030 5x100 BL BM BN BP GE GH GR GV SG SH SJ
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5x114 5x114x GR GV VASTI VAWRX
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