Yes, as Ian says.
I use a 22'slx, an sl2, and a xtel hybird 34', but the guy didn't ask what i use.
On shorter poles (17') the extra cost of carbon fibre carries little advantage.There is a big difference between a 21' and a 17'.
The 17'xtel is the domestic pole of choice for most window cleaners.If you can stick a gardiners supalite brush mono filament on the end that's about as good as it gets.