Glock 26
When picking a pistol for self defense, the pure job description "Self Defense"
says it all.
Concealing/shooting accuracy/on board capacity, so take the with extension, and without on the magazine, reference accuracy.
At seven yards, no difference in accuracy, none, with half your fingers hanging off the end (one hand shooting) feels weird as heck, but no difference in accuracy than with the extension. So ankle holster is just fine.
One of my co-workers, Security Officer, Carry's the twenty six as his on duty gun, it fits all his old Glock holsters! no hang stuff on the rail extra bit, and the G17 magazine I gave him as a spare beats the wee baby ten rounder he had.
In running a few of the old Black Talon WW rounds through my G26, they averaged just over 1000 FPS, the best being 1026 FPS, and quite an impressive profile in the ballistic Gel.
I watched Chris Edwards (with a G26) of Glock, shoot the top score in a IALEFI Annual Training Conference a few years ago, awesome! over 200 firearms instructors from all over the World taking part (including yours truly!) I shot my G17, he cleaned our clocks. He did not win the match, as an industry rep he was not eligible, just shot for interest sake, he still out-shot us never the less!
Not bad for a pistol that can fit in a on belt camera case.