As the title implies, I have a sort of bias regarding Constraction, which becomes a moot point since this figure came before my Bionicle phase. Even with this clean slate, I still have nothing but good things to say about Onewa! Well, except maybe the possibility of his "Proto Pitons" becoming warped. Still, tender love and care can prevent that. One thing I've observed is that a number of factors give him a mountain climber-esque feel: The general shape of his Kanohi mask, the aforementioned Pitons, and, of course, the fact that he's the Toa of Stone. Would definitely recommend picking up if the price is right.

Onewa is my only Toa Metru(for now!), and he has not disappointed. He has two very cool weapons that are like special pickaxes. Then he has a very neat mask with two awesome blue eyes. He matches his element well, because there basically only brown on him, and he is a Toa of Earth. Here are the pros and cons.
Pros:
Mask
Weapons
Matches element well
Has cool blue eyes
Cons:
Weapons are bendy, so they could break.
Onewa is really awesome, and I think is perfect as a starter for the Metru.

This is a set is a good way of getting rare colored pieces. My favorite type of piece here has to be the shoulder armor, or the torso. The weapons are cool too, but they are so easily bent. On mine, they are bent, but still not broken. The Great Komau, mask of mind control is a cool mask with the big eye hole. The gear system is my favorite part because, it looks like he is digging when he is swinging his arms.

Pros:
Nice mask.
Cool shoulder armor.
Awesome swinging arms.
Cool weapons.
Nice colors.

A great Toa for anyone. Get this if you get the chance.

Onewa is very cool-looking, as it has twin stone tools, a gear on the back that swings the arms back and forth, cool mask, and bending legs! The bending legs were a first in 2004 for Bionicle, as they had fixed legs!

Pros:

Stone tools
Cool mask
Bending legs
Swinging arms

Cons:

None!

Overall, a great set!

My little brother and I share my Brickset account and he bought this awesome set off eBay for a great price.

PROS-

rare armor
only-in-this-set-weapons
rare mask

CONS-

I don't like the arm gears, but I can take them out except my brother won't let me and you know what that means- '''MOM, HE [I won't put my real name] IS PLAYING WITH MY DUDE!''' And then I get in trouble.