I have the 17ft Glass fibre X-tel is a good pole, some people have said its too whippy but I like a little flex especially when cleaning window above conservatorys from the side. Its lighter and I think stronger than the extender poles. I would not go back to extender or ecoline.
I also have a 36ft Hybrid X-Tel excellent pole, light short lower section, lightweight and hard wearing.
I also have the 60ft Carbon X-Tel. one man operated, shorter lower section, light enough and hard wearing.
I started with the 36ft X-tel and was impressed so have ended up with the range. Ok you can go lighter with fishing poles, but for everyday use you cant beat the price or the durability for the weight.