I don't make the frames I'm getting them from L-10 in the 80%. I'm having good luck with them, seems like most of my builds are custom serial numbers, the L-10 allows me to do my own numbers. I've used the PT for a few years and had good success with them, so in a nut shell ... witch ever one you pick should make a good build... that's my 2 cents worth of info..lol