I really think your decision is going to be based on cosmetics. Kayfuns are available in different finishes, but may be hard to find all finishes, especially in one site outside of svoemesto.
Russians are only available in matte/satin, and I'm pretty sure the Russians use screw in drip tips, but I haven't had a desire to put another tip on my lites. I think they look/work best for them. I always get bubbley pops with them, so most drip tips would have me actually drinking juice, rather than it just tasting like I am.