Mick - like us the slx poles have served us well, currently I see nothing better from any other manufacturer, they might get close, but are either heavier or dearer or unproven.
I think it's a testament to gardiners that I have eight, none of which have required replacement the oldest of 5 years finally required new sections (1 & 2 ) all these poles (well except mine) are heavily used 7 hours a day 5 days a week.
Why change when somethings not broken, I'm up for testing any other pole if the manufacturer is up for it, but I'm not spending £300+ to find out it can't take the punishment.
The clx on the other hand - not worth entertaining even for that low price, burnt them out in less than six months they are good for an emergency spare
Darran