Looking for best earbuds for iPhone calls

My main priority is clarity on phone calls when using my iPhone 6s now and possibly newer phone later. I do not primarily need them for audio/music but simple phone calls. I listen to music mostly from my Macs via audiophile speakers not my iPhone.

There are a number of earbuds and headphones that have microphones and I know the Apple Earbuds 2nd gen would be great but any still good call quality maybe under $100? You can get some on ear Senns around $100 but would need a case. Any that could fit in pocket for good calls besides Apple's?