But the best shocks I've used are the Pro Uk ones from the H7 range, 3.5mm shafts and hardened body, clips for adjustment and a nice colour too. The XB8 ones are fine now with the G clip replaced and the 777 sp1s did leak when I left it sat overnight on the table after building. Threaded are more tunable but if your going to lock it with spacers then whats the point? Also they get jamed up with dirt in the thread taking more time to clean or adjust, plain shocks are thus a lot quicker to clean and adjust and that's why I run them.