Which Cam Gears (Tuning and bolt pattern)

Take a look at a picture of the hks cam gear. It is a purple center with a blue outer ring with the grooves that the belt goes in. The center part has 3 hex bolts that hold it in place. The position of the center part is the position of the cam, so when you turn it to retard, you are turning that camshaft independent of the other. Once you get it set you tighten the 3 bolts down at -4 degrees. Now if these bolts are not on tight, when the car runs, the cams turn with the center part of the gear to the limit of adjustment of the cam gear. Your cam is now waaay past the recommended 4 degrees and will run like shite. Supposedly the 5 bolts on the Jun gear prevent this from happening. I did not feel it was worth the extra $100 each gear. I have not had a problem with the hks gears. You just have to decide if it is worth it to you...