Ok people i need your help which one to buy

[the watcher]

I'm trying to decide what bluetooth stereo headphones to buy for my iphone 3GS, here are my choices

Motorola MOTOROKR S9-HD

Sony Ericsson HBHDS980

or

Altec Lansing 903/R US BackBeat

any help on choosing the right one will be much appreciated
thanks for any help you can give