I think that the hammer strength machines are good, but I'm also a believer that the foundation of a good weight training program starts with free weight excersises. Again, I think lots of gym douchbags use the hammer strength machines solely for the purpose of looking stronger. However, I will use them from time to time if there is no one at the gym to spot me. The nice thing about the hammer strength machines, or most chest press machines for that matter, is that you can go really heavy without a spotter and not have to worry about killing yourself.