I'll second that, used to have a bit of back pain, even with a harness. Since going over to twins have no probs at all and they're probly heavier!
An they look cooler

Remember the 3 most important Laws of diving:
1) Look Cool!
2) If everything goes th rat sh*t, Look Cool!
3) In the event that laws 1+2 don't apply, Look Cool!
