I prefer swimsuits with a solid color bottom & multi color top. I generally stick to black for bottoms, because then I can mix/match many different tops & have "several different" swimsuits. But I also have some red bottoms, a white bottom, and a couple of multi-color bottoms. Mix & match, mix & match, mix & match!
I love tankinis! - they are so versatile and comfortable. And I like a full-coverage bikini bottom, or a flirty skirt bottom - I just think they're so cute! Plus, I'm nearly 50 years old, I see no reason to try to wear a swimsuit like what I wore in my 20's. I don't have "the same body" and I am definitely not the same woman!

Yet still, some bikini types do look pretty OK on me, and I do occasionally wear a bikini.
I like ordering on-line. I can get what I want in the style I want for the price I want, without having to go to 20 different stores.
Good luck on your Swimsuit Hunt. Have fun, and go for whatever you like!