I have built a few of the A style kits and in my experience they make good mandolins. When new they are loud and bright sounding and when they open up they mellow out in tone and keep the volume. I have had nothing but complements on the sound of my mandolins. I know that Ken gets his F style kits from another source. I would like to know from anyone who has built one of International Violins's F5 kits how they turn out. If anyone has built an A and an F, how do they compare? I ordered one from Ken's first shipment and it was his last one in stock. It had some problems and I had to send it back and he didn't have one to replace it and I haven't ordered another. Now that some have been built I was wondering how they turned out before I order one.