R&G are still tops.... oh yes, and no way that all brands of sliders are the same... if they haven't got alloy bushes inside the plastic they're only half as strong.
and you're supposed to replace sliders after a crash... not only the plastic, but the bracket as well, as it may have hairline cracks.
R&G's saved my race bikes on more than one occasion....
one of them being a lowside at SPA, blanchimont....
.... which is flat out in 6th at race speeds... and that's when i went down.