i bought an SMAX 40 a few months ago and use it on a few commercial and large domestics.also useful for solar panel cleaning.its a pretty decent pole.light for the length and fairly rigid when used straight up.
i cant justify the cost of an extreme as i havent got a lot of work higher than my 25ft SLX.
if i get any work higher still i can always add a couple of sections to my SMAX 40 to make it to 50 ft but i cant see that happening anytime soon!!