My impression of Cal Star over the years has been that their very first video, "Tied & Tickled," was their best, short as it was. The next dozen or so weren't memorable-- some models better than others, some tickish/some not, and the tickling varied, although it never got too intense (the exception here, I thought, was "Tied & Tickled #4," which was fairly good too).
Then they produced a series of "themed" videos, as described above, featuring characters such as Dracula, Jack the Ripper, Phantom of the Opera, and the like. Frankly, if you can live with the goofy plots, these were probably their best if you like your tickling more intense (though still not up to current standards). These ranged, if I recall, from #14 through #10 or #20.
The next 10 videos #21-#30 were also hit and miss. #22 was good (see another thread on this site that discusses this one more in depth). After "Tied & Tickled #30" they stopped simply numbering their videos and began giving them more conventional names. This also seemed to mark a steep decline in their quality too...
Or maybe it was about that time that other video producers began to appear, like: Solefully Yours, Harmony Concepts (the early years) and eventually the Magic Touches, Femfeets, Paradise Visions and Yaqis of the world, who've raised the bar so much in the last few years, the Cal Star stuff just doesn't compare any more.
My two cents!