I’m another who has bought far too many needles!!! But that’s part of the fun of knitting! I, too, love my Denise. They are affordable and very versatile. The sizes don’t go lower than 3.75 mm because the cords are pretty thick. I also find that the plastic scratches, so I have to watch which stitch markers I pick up when using them. Their customer service is wonderful because it’s a family owned business. Absolutely lovely people.
I bought the Boye needles because they seemed to be such a complete set, but the cords are almost useless - very stiff. However, the set can be rejuvenated by purchasing Chiaogoo red cords in the small size along with a pair of cord connectors.
I like the Clover Takumi set and use them quite often, but I find bamboo is grippy when using acrylic yarns.
My favourites are the Chiaogoo twist complete set 4". The cords are so flexible and don’t kink one bit. The needles are smooth and pretty slick, which may not be for everyone. They are costly, but I think I would not have bought the other sets had I known about these first.
One tip I have for those needles that don’t click into place - I keep a small piece of the rubbery kind of shelf liner to use to grip the cord as I tighten. If the set provides a key to use…use it! It makes all the difference. Hope this is of some help.