Never had any trouble with the WWB. Their HP's perform very well too according to some ballistic tests I saw recently...can't remember where I saw that at the moment...(Combat Handguns magazine maybe???)
I found a good deal on Blazer ball ammo a while back and went through every bit of it without any sort of problems. Only problem is the aluminum is not reloadable...
Federal has been good to me too, that being said, I've never known a GLOCK to be a picky eater...
Congrats on the new gun!!!
Member NRA, GOA, GRNC, SAF, NAGR
Proud Supporter of USA Shooting