I seem to remember recommending that 22slx setup to you daz but that's by the by
. I started with a 27clx with an AD, and found the closed length too long and it's shorter than a 25 slx, but I now use a 22slx with an AD and xtreme brush and I find it a great setup, the ad may add weight but the xtreme brush compensates for that, and if you rinse on the glass then the AD really doesn't make too mush difference.
I find the 22 slx does 99.9% of my work, awkward windows and 3rd story, I only get my Clx 27 out a couple of times a month.
Maybe sell your 25 slx and buy the 22, as I think the AD benefits out weigh the extra weight it adds to the pole.