I hate pinning but I've finally succumbed and a good quality thin pin really does make a difference. I now use Clover Flower Head Fine Pins .45mm linked here:
https://www.amazon.com/dp/B0181UGTJQ...hk_typ_imgToDp Let me know if the link doesn't work and I'll try again (no affiliation, just really like them). They're usually about $5 for 20 and once in awhile you get one that isn't quite as sharp as the others but goodness, they've lasted a long while for me and they're so thin they don't distort the seam.
As a former hate-to-pin-refuse-to-do-it quilter, I'm a convert now
Eta: the blue ones are the ones I use for piecing. Clover also makes a box of 100 flower pins that are green, pink, white, and yellow but those are a thicker shaft. I use those for bag making or anything where the fabric is stiffer or thicker.