I had a pair of regal tips years ago, and I remembered them as being pretty good, compared to the various others I used. So when I started playing regularly again a few years ago, I tried them again - I settled on the Jazz model, they suited me fine. Recently my playing has changed, also my band, and I looked around for something just a little heavier - tried some different makes and sizes, and decided I still liked regal - but the rock are too heavy, the 7a's too light and short, etc, etc - finally I discovered a model called JC on their website - never ever seen it in the shops. Perfect! just a tad lighter than rock, with a slightly longer taper, like the jazz, but a bit meatier. And they stay in my hands!! I suspect they might be named after Joe Calato, the boss man - his own preference maybe??
Terry