I have kkms in my g20 and g26. I love both of them. I have heard mixed reviews on stormlake and lone wolf barrels. Good thing about lone wold is the price. But I would stick to kkm.
I currently have a KKM barrel for my 31 and an extended/threaded gemtech (made by lonewolf) for my 23. Both work great. I am going to order a KKM for my 20 this week. I am of the opinion that barsto makes the highest quality product but it requires fitting and I am not of the skill level that I could notice a difference anyways. All three are quality companies with good folks.
