Hmmm!
Jimbo, I agree 100% with excel. Over the years I used to think that everyone begins to develop a tolerance after extended use of different products. However, I've discovered from friends and personal experience that this isn't necessarilly so. I experience nothing more than a mild bruised feeling from prop, sust, susp, etc. but I have friends who after ten years of juicing still dread their prop or sust shots.
Tae**