Suits of amour...? I guess you mean the Gold Cloth? I have to admit, I guess the only one I really can draw is the Sagittarius Gold Cloth. I slowly learn to draw the other Gold Saints too, but recently I tried to draw Seiya, and I failed. But honestly, I don't like Seiya. I just don't like him, despite him being the main character. My favourite Bronce Saints are Hyoga and Shiryu. I also love Hyoga in the Aquarius Gold Cloth... After the Sagittarius Cloth it is the one I can draw best of the other Gold Cloths.
And you can draw the suits of armour T_T that was my problem back when I was watching Saint Seiya (OMG... 13 years ago...). I just couldn't!
I do mean the gold cloth. I don't know what they're called in English, but in Spanish, the name is the equivalent of 'suit of armour'.