As said i use a 44ft carbon facelift.
This is my oppinion after 15 months of abusing the pole-
I have only once had to tighten a clamp (tool free process) & have only once taken it apart to clean it. it still works as good today as it did when i first got it.
The beauty of these poles is that they are demountable- each section can be taken off easily with no tools required, they just slip on & off each other ( & yes, they are telescopic ). this gives you the ability to use one pole at any length you wish. like me, i only use mine at 44ft once per month (all sections fitted) 30ish ft a couple of times per month (5 sections fitted) the rest (95% of the time) with 4 sections fitted @ 24ft. The other benefit to this is that if you do break a section you can just replace that one section quickly & easily. The clamps are superb, low drag, very possitive almost like an on/off switch- so extending/retracting is very quick & easy. the clams are slim not bulky & can be positioned anywhere around the poles circumference- top, bottom, side etc. so there is little chance of catching the clamps on anything.
It is light, rigid & very, very rubust compared to some others in it's catagory.
You can easily alter the length of pole hose by using a push-fit in-line connector which will still go up & down inside the pole with no obstruction, this is what i do so i don't have 44ft worth of pole hose on my 24ft pole.
The facelift brush is excellent for big glass- commercial but not so for domestic ( it's a bit big & bulky) however, for 6 quid you can purchase an adaptor from cleantech which allows you to use a standard thread on the end of the pole & fit your prefered brush/goosneck/angle etc.
All in all it realy is a top qulity piece of kit, one of the only things i've ever bought that has lived up to all it's hype & done exactly what it said on the tin with no hiccups.
Hope this helps
Tony