Halcro,
With my JVC QL-F6, I use a Signet TK5Ea. The original stylus is on its last leg and needs to be replaced soon. I used to have a TK-7E but Audio Technica no longer make that kind of stylus so I sold it and I opted to for flexibility and kept the "Ea" type of body. I just reread your earlier post about the QL-A7 with the Signet TK-3Ea and coincidentally that's almost the same set up I had in my introduction to JVC! I was using a QL-7 with Signet cartridge. Fantastic sound!
Happy listening!