I had the understanding that the ameetec lowers were machined by the same company that produces bushmaster lowers. Correct me if I'm wrong, but basically for your 90 bucks you're getting a bushy lower with a better finish than what bushmaster uses when you go with ameetec. Also understand that it really doesn't make any difference what lower you buy. Pick a logo you like and buy theirs, you'll be equally happy with any of the ones mentioned in this post. I liked the ameetec logo way more than any of the others, and I could also get a serial number that matched my motocross racing number so it was a no brainer for me. Finish is beautiful, lettering is crystal clear, tolerances are perfect, and my "seam" is nowhere near as pronounced as the seam I have seen some pics of in this forum. Maybe because mine was from the second run? So, make up your mind and buy whichever one YOU like the best, not what the PEANUT GALLERY convinces you to. It all comes down to whether you like the atom logo, or the quasi "Legend of Zelda" logo better.