I've got a parrot kit. Not sure which model but it's great. The speach recognition thing is crap though. Basically to initiate a voice command you say 'mobile' and it beeps to let you know it's ready for the next command, e.g. Call John Smith etc etc
The trouble I've had though is it's too sensitive! I could be in mid conversation with a friend in the car and it'll activate as though I've said 'mobile', and then it'[ll interpret the next words I say as instructions to call someone and it'll start randomly dialling someone from your phone book!
Suffice to say I've turned the voice commands off! The rest of the kit works great though.
My model is similar to this one:https://www.parrot.com/uk/products/hands-free-car-kits
However I think mines a previous version as the shape is more symmetrical than this one.