Marvel: Crisis Protocol has some good looking minis. But, you need to be careful when assembling. While the sprues have the parts numbered, the assembly instructions don't reference them. I have more than once assembled a right forearm to a left upper arm.
They're approximately 32mm plus or minus a bit. They also have terrain pieces like cars, lamp posts and a Daily Bugle news stand.
They are a bit expensive, though, unless you're also interested in the game (I'm not--just the minis).