anjohl: Aren't all the editions of that game essentially the same?
Blood Bowl (the board game) features 21 officially recognized races, plus a handful of semi-official ones. Of those, Legendary Edition features 20, and the upcoming Chaos Edition will support all 21 plus 2 of the semi-officials. Dark Elf edition features only 9 races.
In multiplayer, owners of DEE cannot play matches against owners of LE or CE. Since everybody who likes Blood Bowl has upgraded to LE long ago (to get the missing races), multiplayer for DEE is practically dead. About once in a week, there's a player in the lobby asking why he can't find any matches. These are usually players with DEE.
DEE also hasn't seen a patch for ages, while LE is at least sometimes updated.
In short, as I said above, DEE is a good choice if you want to learn the game while playing single player, but the AI isn't really competitive. Once I understood the rules, I had a streak of 50 straight victories, which brought a newly created team straight to winning the championship. After that, I quit single player and focused on playing against other people.
I _am_ quite a fan of Blood Bowl, but if you like it, you really should get the Legendary Edition next time it's on sale (GamersGate occasionally sells it for 10 €), or wait for the upcoming Chaos Edition.