I'm sorry but I don't know much about Hasbro's. Of the other two, I would say Master Replicas, Luke Skywalker Episode V.
Icons' is a mix of the ANH and ESB props, while MR's is a version of Luke's lightsaber that we see in the Wampa's cave in ESB.
There are some good pictures of them in Rebel Scum's photo archive:
Master Replicas also made a FX version of Luke's lightsaber:
Master Replicas' replicas of the Anakin's lightsaber in ROTS are good replicas of those props used in that film... but those were in turn a bit different in detail from the props used in the filming of ANH and ESB.
Don't confuse any of these sabers with Anakin's from AOTC, which is completely different.
Disclaimer, though: I don't own any of these replicas, but I have seen and held them in person. My own lightsaber replica consists of a vintage Graflex flash gun and custom-made parts.