The big strike is 1/60 scale. They also released an edition with all three weapons packs, and a Freedom Gundam, in the same scale, but I didn't get them. It cost me about 40 bucks, something like that, and is about as detailed as a nice HG kit, just really big. (In other words, no internal detail) I've also got the Master Grade strike, which I've yet to take pics of.
The Fix series (along wit the new Zeonography line, which is essentially the same thing, just figures of Zeon suits) are really great looking, and have good poseability. However, they tend to be relatively fragile.