Ive had 2 extreme 25s now
First one lasted 7 months before snapping top section (which i thought was poor)
but then 2nd one i snapped it after a month lol (top section again)
Both poles snapped after being dropped with the top section extended, when i say dropped more like falling over for example when they were leant up against something....
The second snap was actually quite funny, i dropped it which gave it a hairline crack. I thought ok i will see if i can glue it or something when i get home and carried on using it, it didnt look that bad. Few houses later i was scrubbing a front door and the thing just snapped in half like a twig... much to the amusement of the lad who was working with me
I can literally throw my slx around and jump on it, kick it and it wont break, but as alex says the extreme can snap if you look at it the wrong way.
BUT its the top sections that are the problem the rest aint that bad, i replaced both my extremes with slx top sections and after that the rest of the pole seems pretty strong and lasts .
In future i think i will do what daz says and just replace sections as they wear, i wouldnt bother buying the top extreme section.