I have the regular Luna beads and the Luna beads Noir, which are the same as the Minis except they're black and only come with the heavier set of weights. I used to have a Teneo Duo but I rehomed it because it was too uncomfortable for me. Like it was too large or something and made me feel like I had to pee when I didn't. I like both sets of Luna beads, but the Noir set is challenging to keep in (for me anyway) and the rattling sensation isn't as noticeable. I would recommend the regular set if the size doesn't pose an issue. Hope that helped!
I grabbed the Luna Minis after having a size/fit issue with the Smartballs Teneo Uno and they work out so much better. They are a bit noisy with the rattling, but out of those I've tried they are the most rattly.
I've never laid hands on the Lunas (though I want to, real real bad), but I own a pair of Smartballs. I did a couple of tests with my boyfriend before wearing them out and about - I felt like everyone could hear them, but he insisted it was all in my head, or something along those lines.
The Smartballs are a bit big, but your mileage will vary depending on what you think 'big' is.
I have the Luna Beads Noir, which are the same as the Minis but apparently quieter. I would recommend them to you - they're really nice. I haven't tried the others, though, but size is a major factor for me since I'm very tight.