I see no need for single stack 9. The 26 is plenty small enough, holds 10 rounds, plus I can use 15 & 17 mags. What more do you need? A 26 is easy for most people to conceal and other single stacks 9s aren't that much smaller. At least not enough for me to give up rounds.
"AN ARMED SOCIETY IS A POLITE SOCIETY"
NRA Endowment Life Member, Glock Armorer