I really do like the rubber Talon grips. Rubber Tractiongrips are also a good choice. I don't care for any of the slip on grips for a carry gun.
They all seam to grip my shirts.
I also no longer use mag extensions as I like to keep my G26 as small as possible. I shoot it just as good with out the extension.
I carry my Glock 26 daily and I have found it to be the perfect carry gun for me. The only thing not stock on my 26 are the night sights.