Unfortunately, I have no other point of reference, except that when I first started up, I purchased 2 poles from another major supplier and they were not ideal. Actually they were rubbish.
I now use a Gardiners Xtreme 22, (I had elbow issues, tennis elbow and golfers elbow. Caused by using a computer for 20 years) not anymore, despite all the best health cures, simply buying the lightest equipment has cured the pain issues. For me anyway.
I have an original 22 SLX, with original clamps, never had a problem. It is used as a backup and also for soft washing.
I've just purchased a CLX for soft washing and it is brilliant.
I think the Xtreme is the best pole on the market, but the SLX is the BEST VALUE pole on the market.
Also Gardiners' service is second to none!
I run a business, I need good customers and good suppliers,
I don't need to worry about suppliers; I use Gardiners. Could do with a few more good custies though!
P.S. Oooops sorry, yes stick with the SLX