Glock 26 - hands down. None of the single stack Glock reliability issues, shares mags with your G17, holds 11rds of 9mm, will likely be the most accurate 9mm you own:

JYD #123 The great one formerly known as Architect.

I am now a fictional British television police officer (currently a Detective Sgt) at Thames Valley Station. My governor is Detective Inspector Fred Thursday and it’s 1969.