Thicker (takes up more bar space), more expensive than iron. Grip Plates Best for: General fitness and ease of use.
I can then recommend or types of plates that fit your space!
Shipping 300 lbs is expensive; look for "Free Shipping" or local pickup. Do you plan on dropping the weights (like in CrossFit)? Are you buying for a garage, basement, or upstairs room ?
Consider a weight tree or rack to keep plates off the floor.