Bluetooth adaptor for iPod docking stations

[dodsi]

Bluetooth adaptor for iPod docking stations,

I have a Sony sterio system with an iPod dock but no longer have the iPhone as swapped out the iPhone 4s for a galaxy s3 and now s4 when the iPhone 5 was announced.

I have seen these adaptors that slot into the 30pin socket and it means I could stream spotify from my nexus 10 or galaxy s4 to the stereo. However, does anybody have any reccomendations as to which one to get, prices seem to vary massively and I don't mind spending out if there is something good out there or does it matter?

[Tarmacsurfer]

I bought the cheapest I could find on eBay as my partner had a couple of decent sound docks around and I've persuaded her to switch from Apple, paid £6.99 inc postage, it works fine. Ended up buying another at which point I discovered that all docks are no equal - some older docks charge at 12v (firewire) rather than the 5v USB rate these little bluetooth adapters require. Bought an adapter, it now works and all is fine.

Couple this with Google Music and I'm a happy chap
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I'm immortal. Well, so far.

[dodsi]

Excellent, thanks for that. A fiver from currys will do the trick then.

my dock is the 5V USB type.