I love my Brompton, have taken it for short tours, and use it for a weekly grocery run (big front bag and a back pack). You can carry quite a lot, actually, tho

I love my Brompton, have taken it for short tours, and use it for a weekly grocery run (big front bag and a back pack). You can carry quite a lot, actually, though probably not a Costco run for a family of four. (That's what my cargo bike is for.) The Brompton bike is also quite bombproof. It's heavier than other options, but solid as hell.