When shopping for a DVD player, you can pick the cheapest one for £30 in a supermarket and it will do everything you want.

What about Blu-ray players? I've been looking on play.com and they range between £70-£150. Some of them claim to have greater picture quality - is this true? Does the quality of the picture depend on the player, i.e. are there some that give noticeably outstanding quality? And can you region-unlock players like you can with almost all DVD players? Are there some features of the more expensive players I really should be having?
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