Pap -

What would you expect from a guy that just bought Gen 4's? Of course they are gong to be the best. Of course they are going to run flawlessly. He wants them to be that.

Go on some forums where "professionals" give their opinions based on hard use, not some fanboi telling you how wonderful it is after he ran 100 rds through it. Try the 10-8 forum, you may find some stuff there. Or M4Carbine.net, there is some discussion there. Just use the search function.

Ironic the guy you quote says the XD "grip feels like you're holding a stick instead of a gun IMO". He must not have tried a Glcok 21.