They're all solid games, but they have their own quirks. The Post-Arthurian has a lot of variant classes, PrCs, and house-rules--also a set of interesting level 2 pregen characters with rather great stats. In exchange for having pregen characters, t is incredibly rich in backstory, story, and plot. The big problem is that I actually drew out the few dungeons in that one and I don't have them with me.
The one based on the WotC-rejected storyline starts off at level 1 in my homebrew world. It's meant to be a short and entertaining adventure, but when I ran it with my FtF group as a three-shot (one shot in three sessions), they managed to turn the whole thing into a long-standing campaign and fail at the original adventure