You need to know what you want. If you just want the game patched, then I would go for the latest one. If you want to have the best WorldEd patch, go for the 1.0.7.0 (Note: I have noticed, at least on my machine, that, on the end credits, the music does NOT play when using this patch... Maybe it is just my computer...). Download them at Dimentions of Arcanum or Terra-Arcanum.