Are the 1/100 grade Gundam models more poseable than the 1/144 grade?

I bought a really cheap model of Gundam Exia for about $6, the damn thing was a waste of money because it's so stiff. The arms and legs barely move at all, and if I'm not careful some parts fall apart or try to break. I think it was 1/144 grade. Are the 1/100 grade models more poseable? I'm looking at a budget of about $30 here, what should I be looking for?

I really don't much about these models, but I like building them. I just want something I can have some fun with when it's finished. I put the Gundam Exia model in a box in my closet because it's so useless and boring.