Yes, Kenting region is beautiful, but depending on the time of the year, can be chock full of tourists. Kenting town on the other hand, is overly commercialized and full of tourists.
Kenting is on the west coast, but it is the east coast, facing the Pacific Ocean, that I find more impressive. If you have your own transport, it is a very beautiful and fun place to explore. Kenting is not just a night-market and seas, there's also the beautiful and peaceful countryside and small little towns dotting the entire region. Scooters and ebikes are available (read my post above on this topic).
In historic Heng Chun town, there's a small mostly-locals night market(Sunday only) that you can check out. Unlike the Kenting night market, this one is devoid of tourists, which I feel makes it more authentic and less busy.
If you don't have your own transport, then you'll have to rely on the public buses or taxis, which I imagine is more inconvenient.
And lastly, if I had to choose between between HK and Taiwan, I would pick Taiwan. HK food is better, but in almost every other aspect, Taiwan is better (note: this is a subjective opinion).