Give us a clue on where to start. There are lots of options in steel, price point, size... I’d recommend stainless steel rather than carbon steel because being a city guy this knife will likely just sit in your bag getting no use or care, and stainless blades should be fine.

For the fixed blade I’d recommend a Mora Companion in Stainless, not because it’s the best knife available, but because it’s a good knife that’s inexpensive and won’t set you back when you decide you need to step up. There are lots of better knives but not at that price. A lot of folks in this forum like Mora knives.

Folders? A single blade locking folder or a multiple blade slip-joint?

Check out Doug Ritter RSK® MK1-G2 a Knifeworks Exclusive. As I understand a % of the price goes to support this forum.