If your focused on shield sized pistols meaning compact and 20oz an a 9mm is some cases look at the Bersa BP or pro thunder uc 9mm , kahr cw9 40 and 45, kt p-11, ruger and the glock 18,23,32and 38. with 10 shoot or under mags. I figure the 26 and 27 or to short.
Just lay for paws on everthing you can. Guess you'll know when you find it. Try to rent one. many ranges will let you shoot different pistols with an ammo purchase. Any pistol if it functions well can be learned well, even something as odd as glock feel to many . HA