The Fikou Web

I think it's a mistake to lump in the glatorian heads with the heads that came afterwards in Hero Factory and Bionicle G2. See, the Glatorian heads on their own are easily the least useful of any constraction-based head, because they break so gosh-darned easily. The Brain attack heads and the G2 heads use the CCBS socket type that doesn't break, and thus they're comparatively way more useful in the long run.

 

But, to answer your question: probably the 2004-2008 heads, AKA the toa metru heads.

I prefer the newer ones with sockets. Not only are they the most compatible with CCBS, they tend to have a more realistic range of motion (the ball on the 2004 heads being directly behind the "mouth" could make it extremely hard for figures to look down). It's also much easier to incorporate a ball joint for the "neck" of a custom torso than it is to add a bulkier ball cup.

I'd say G2 heads for the poseability, and compatibility with ccbs, but metru heads for the mask selection.

I can go both ways.

2004 heads, because they worked for both the old and new styles of masks.  But I still appreciate the original 01 heads, and I think their eyestalks worked the best at making the eyes brighter. 

 

Inika. Enough said.

 

 

 

Seriously though, 2004 by a long shot for posing capabilities. If there was an easy way to get 01's heads to be as adjustable, then they would be the top. There's more color choices for them.

I'd say the 2004 heads would be the most useful in my experience, though those are the most limited in color aren't they?