Using a clx for a full time experienced window cleaner is a bit like using argos spanners as a mechanic. They are fine starting out or part time use but false economy.
There maybe some truth in this but even though the clx is a budget pole I doubt it would be in Gardiners interests to sell something labelled as Argos quality.
I can remember back in the day, buying my first pole from Gardiners pre slx or clx before they produced their own.. A 39 ft universal fiberglass with a vikan brush !
Even a clx is a dream to use compared to that. If I only needed an 18 ft I'd probably just buy a clx, nowt wrong with them.