Go with the Jetloader if you can get them. They are easier to tune. Basically you take it apart and sand down the handle so that there is only about 1/4 inch left to hold the bullet, then put it back together. It will release the bullets faster and you will not have cases stuck when going into the chamber, thus losing a round.

You can do the same modification to the Safarilands. Safariland has a blind hole for the pin that holds it together so it's just a little harder to take apart.