help glock 26 or 27

Either are fine pistols and will do a great job as your CCW.

It will go back to the old 9mm vs .40 cal debate - Does the 9mm has the stopping power to take down the BG?
Its like Coke vs. Pepsi.....Mac vs. PC....Ford vs. Chevy.....Blondes vs. Brunettes......Doggy vs. Missionary.
There will be about one-gazillion opinions...and they'll all be right. They'll be right for that particular person because we're entitled to our fair opinions. So like em or not, here's mine:

I conceal carry a Gen4 Glock 26, in a good holster, with Speer Gold Dot 124gr JHP's. I chose the Glock 26 as my CCW because the lower cost of 9mm ammo allows me to shoot more often versus using .40 cal ammo. With more range time and less recoil - I'm extremely confident in putting 2 rounds center mass at any conceivable pistol fighting range.

For me (and this is my opinion) - Shot Placement > Caliber

So pook, you're saying screw it...I should just go buy a .22 LR and just shoot the BG's eyes out because with the low cost of .22 LR ammo - I'll be Top Shot in no time!!!

Of course, I'm not advocating carrying a Ruger .22 LR so you can shoot 1000 rounds 4x/week and become accurate due to the cheap cost of .22 cal ammo. But, countless ballistic gel tests and ammo reviews gives me confidence in the 9mm JHP round. Especially when I feel extreme confidence in my shot placement. IMO - the 9mm round is the MINIMUM anyone should carry. Sorry 380 lovers. But hey, this is pook's opinion. And pook knows what pook likes!

With either pistol, I recommend getting the Pearce Grip mag extension for the lil piggy that cried all the way home:
http://www.pearcegrip.com/Products/GLOCK/PG-26

Good luck...and btw: Coke, Mac, Ford, Brunettes, Doggy