Obryn
Hero
(1) While my group is enjoying 4e, I need to speed up combat, and this thread has been great for that. (We had the same problem in 3e, by the end.)
(2) Earthdawn is an odd duck. When it was competing directly with 2e, there was no contest - it had better mechanics and a better setting, with higher-quality materials all around. On the other hand, it's a very 90's style game... There's some character customization, but less than 4e and much less than 3e. Balance goes out the window by about 6th Circle or so. Karma is all-powerful. The Step system can get cumbersome. With that said, the setting is pure excellence. The sourcebooks are great reads, but contain very few mechanics. The setting detail can either be enriching, enlightening, or oppressive ... Mostly, I found I cared about the setting way, way more than my players did. They just wanted to play D&D with better mechanics.
(3) WFRP2 is outstanding. I love it, and it's one of the 3 games I have in rotation. You can run a comprehensive game with nothing but the Core + Old World Bestiary. (I'd recommend Tome of Salvation, Tome of Corruption, Sigmar's Heirs, and Realms of Sorcery - but they're not necessary. You could probably run an entire campaign without the Brettonia, Kislev, Border Princes, or Vampire books - but they're all well-done and lots of fun as fluff.) I know that all roads end in Champion, but if the PCs get that far, something has gone wrong.
Really, you're talking 50+ sessions, at 100 xp per session, with a very deadly combat system. About the only thing I'd recommend is house-ruling armor to go 1/2/3 (or 1/2/4 or 1/3/4) instead of 1/3/5 for Leather/Chain/Plate. Plate plus a high TB makes for gruesomely long combats.
-O
(2) Earthdawn is an odd duck. When it was competing directly with 2e, there was no contest - it had better mechanics and a better setting, with higher-quality materials all around. On the other hand, it's a very 90's style game... There's some character customization, but less than 4e and much less than 3e. Balance goes out the window by about 6th Circle or so. Karma is all-powerful. The Step system can get cumbersome. With that said, the setting is pure excellence. The sourcebooks are great reads, but contain very few mechanics. The setting detail can either be enriching, enlightening, or oppressive ... Mostly, I found I cared about the setting way, way more than my players did. They just wanted to play D&D with better mechanics.

(3) WFRP2 is outstanding. I love it, and it's one of the 3 games I have in rotation. You can run a comprehensive game with nothing but the Core + Old World Bestiary. (I'd recommend Tome of Salvation, Tome of Corruption, Sigmar's Heirs, and Realms of Sorcery - but they're not necessary. You could probably run an entire campaign without the Brettonia, Kislev, Border Princes, or Vampire books - but they're all well-done and lots of fun as fluff.) I know that all roads end in Champion, but if the PCs get that far, something has gone wrong.

-O