I find the Forgeworld avatar to be a jaw-dropping sculpture. If I collected and painted miniatures any more this would be my very first purchase...
Erm, okay, reality check--it would be my first purchase once my skills were back up to par (I haven't painted in 18 years or so!).
On the scale issue, though, I was personally rather disappointed with the idea that it is so much larger than the original model, and by "original" I mean the very first avatar. You know the one, it was about half the size again of a Marine. Now
that was the size that will always be a part of my own image/interpretation of the Eldar avatar, not this 50' tall (or whatever) monstrosity.
Small Avatars have rights too!
Kage