i use a shimano powerloop it just over two years old and got lots of life still in it picked it up secondhand for 60 quid best buy ever but you really need to know your poles and there ratings some have thicker an better thickness of walls of carbon, jeffs f16 was a good buy, there is lots in sales.
Its nearly 4 years since I went round shopping for fishing poles and yes some have thicker wall sections, after many months I picked the f16 because you could get extension sections as you can now with other makes like the Garbollino. Its (f16) a good compromise between strength and lightness for only £250 and I had it to 80ft . There may by now be better poles out there like the Maver, Daiwa, Browning. Some of the earlier models were thicker and ideal for use up to 40ft.
They all cross match somehwere along the length and for instance the Garbollino extensions fit into one model of the Shimmano.
Used gently and they last, I still use my f16 after 3 1/2 years over the emporium because the joints are smooth running .
through your hands.
Tape the joints to stop ccompression and strengthen the poles. ps I have made another discovery about c/f pole wear but more on that later.
ps they will still go up in price as the air industry is making blooming wings out of c/f.