I seem to remember that one of the most frequent things on this forum ten to 11 years ago was everyone ripping on Gabrielle(who was at war with this forum) and saying the TP has nothing but models that weren't ticklish and faking it,
Some were faking it in the early days, but most of their early videos are great quality. I even enjoy some models who possibly were faking it. Haters gonne hate I guess, but early Paradise Vision is certainly among my favourite productions. Also, Gia was one of the best ticklers of her time (very relentless). Gabrielle's reactions were also epic. I also know Gabrielle never showed her face, except for maybe in one scene in Tickle Slaves (during the wall of feet scene, you see a slightly chubby unidentified woman and I think that's one scene where you can see Gabrielle in person for a few seconds).
Best early Paradise Vision models were Starr, Tracy, Gia, Gabrielle, Renée, Glenora, Lily, Jenny, Ariel and Chynna (sadly stayed at one scene with her). Though I also enjoyed less ticklish models like Bridgette, Devin, Viviana, Katie, Baby (less ticklish than promised, but still a great reaction) and so on. Daisy Davis in that teacher clip is also very nice. I've missed quite a few in my list, but those names are what come to my mind right off the bat. I have an entire map of clips of them and I love the fact I can always download them again since I paid for them. They are very expensive though.
I like their new videos far less, though Rose comes to mind of their current generation gem. I think nowadays the best productions are UKTickling, TickleAbuse and TickleIntensive (they have Sahrye, I only think they go too hard at those models from the start instead of gradually intensifying the tickling). BostonTickling also have good quality from time to time according to my personal taste.