we have some problems with new poles, they always need tightening, when the old ones didnt used to...
however after giving our new clamps a battering for the last 6 months, they are working a treat. still need tightening sometimes, but you dont get the old probelms of worn down poles that have sections you cant clamp at.
in balance i think these clamps are far far better. other wise you're always fixing your pole or having to readjust if you clamp in the wrong place