I have an A frame crane like your first pick at work. Rated for 2 ton with an electric hoist. Makes it really nice tearing something apart. And being able to hit a button to lift or lower makes it really handy.
I don't really care for the cherry pickers (pics 2 and 4). They are handy for pulling a motor or lighter stuff. But even with only 500 lbs hanging off it, they can be a bear to move.
With the A frame crane, I've moved 2,000 lbs by myself without to much effort getting the crane to roll. Just take it slow or it can get away from you with that much weight on it