Button fly? Zipper fly?

Which do you prefer, button fly or zipper fly?   We can see jeans with a zipper fly everywhere today

Baywell Women's Baggy Wide Leg Jeans Low Rise Extra Wide Leg Denim

Zipper Fly Button Fly Mid Metal Zippered pencil Pants Pants

Flap Pocket Side Baggy Mom Jeans - Grey S

Jean Zipper to Button-fly : 4 Steps (with Pictures) - Instructables

New Arrival Button Fly Zipper Bottom Jeans – BEYOU Apparel and Accessories

Glissando (Love Notions). 2 straight leg linen pants. Button fly to zipper fly.

OYOANGLE Men's Buckled Detail Zipper Fly Button Front Business Suit Pants Work Office Trousers Whit Pockets Black Small at Men's Clothing store

halfmoon 101 JEANS zipper fly (Sew Along Day 7) – halfmoon ATELIER

Dark green Zipper Fly Button Fly Mid Metal Zippered pencil Pants

OrcaJump – Dark Blue Denim Boot Cut Pants with Button Fly, Zipper