I use my 17ft Xtel for fascia cleans and conservatory cleans, but I dread using it, it's such a rubbish pole really.
I used my SLX once for a fascia clean, and the noise the grit/dirt made (might have been some mortar spots on the fascia, coming down the pole?) in between the sections made me slightly uncomfortable so to speak, so I'm just using a cheap pole for those dirty jobs. Since then I've used my SLX once on a fascia clean, but used a ziptie on the gooseneck, so most of the water didn't get to the pole itself.