I have a set of Denise needles and rarely use them because I prefer a thinner, more flexible cable. I also find the tips to be more difficult to work with. When I bought needles I had to compromise: I really like the nickel plated ones from Knit Picks Options but prefer the tapered tip of the Sunstrucks which I finally decided on. The tapered tip carried more weight in my decision. I think loose knitters are much more likely to prefer the Denise needles. If the Denise needles fit your style of knitting, you just might love them.
Cheating is an option. . . . Cheaters never win and winners never cheat, but smart knitters who want to retain an iota of sanity do, cheerfully. ~~Kory Stamper