I was glad when I saw the Mallory 150 caps in the kit. I had a recent experience experimenting with caps in a 1960 tweed Bassman. One of the old Astron caps was leaking so I bought an expensive Sozo replacement. When I put it in, I felt the amp lost a lot of life. I put the old Astron back in. Later on I tried one of those small white Mallory 150’s and I could not tell the difference between it and the Astron. Actually, it sounded better since it was not leaking. The point is IMHO, expensive isn’t always better as far as caps go. I am going to stick with Mallorys for now. Also, Johnny at Kendrick Amps said he like the Mallorys and he builds amps for a living.