I found this one on HUKD but not sure it's from a reputable seller:
http://www.ebay.co.uk/itm/271413633753?clk_rvr_id=616725675469
I'm not so sure that BR writing is necessary...what would I use it for?
I do have USB3 on my laptop....er, well,I have a blue USB socket
Sorry, I missed the fact that it was a laptop entirely
That Panasonic looks fine......Again, good enough brand rather than no-name rip off import, and it does more than I expected for that price
They (the seller) have nearly 10k sales on Ebay, and still have a feedback of 99.7% which I'd be happy with, given that some complaints will have been generated by Postman Pat kicking the parcel around in his van.
In your shoes, I'd be quite happy to go ahead and order that I think....at £40, it's not the end of the world if it lets the smoke genies out the day after the warranty expires
EDIT....as for the writing aspect, it has it, but look at it as future proofing even if you can't see a need for it now

I've bought 1TB Hard drives before now where I could have spent 25% more and gone for a 2tb drive......."I'll never need more than a bloody terrabyte!" I thought........
Even my porn collection runs to nearly half a terrabyte now, and I've had to go and spend more over the tears on drives for my films and music........Go as big/fast as you can afford to (until yoou get into the 'bleeding edge' price hike area) and you won't regret it, IYSWIM.