Plantronics Audio 450 alternatives, similar headphones

Hama PC Headset HS-80
Specifications

Hama PC Vibra-Headset HS-400
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Koss CS-80
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Koss CS-95
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Koss CS-100
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Koss SB-45
Specifications

Koss PRO 4AAAT
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Poly C351N
Specifications

Motorola S805
Specifications

Deutsche Telekom GN 503 USB
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Sony DR BT30Q
Specifications

Sony Ericsson HPM-85
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Poly - Plantronics DuoSet CHS142-E1
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Poly - Plantronics SupraPlus Wireless CS351/A with Voice Tube
Specifications

Poly - Plantronics Discovery 640X
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Poly - Plantronics MX 250-N1
Specifications

Poly - Plantronics MX 250-STD
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Plantronics USB PC Headset DSP 400
Specifications

Plantronics Audio 510
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Plantronics Audio 550
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Poly - Plantronics M 175C
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Poly - Plantronics Pulsar 260
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Plantronics Professional Stereo Headset
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Poly - Plantronics .Audio 910
Specifications