Epona, wow what an extensive and accurate list!
I already knew that this was your forte but still, I'm impressed. There is a modern english translation of Sir Gawain available from Penguin.
BTW Some of you may consider this "fluff" but I really liked the original take on the story provided in Marion Zimmer Bradley's Mists of Avalon. (the other books in the series are less interesting IMO)
Malory is great but will not give you a new, original view of the story logically as it is like Epona says a very famous and early work.
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Melusine, Archbabe of the OHF and the LH
Your voice is ambrosia