https://www.bosch-professional.com/gb/en/products/knife-set-2pc-1600A016BM

These are great. The folding one on the right, I mean. I find the fixed blade more practical for bigger knives that you’re likely to be putting some force into. It’s perfectly rigid with no rattle while it’s open, and the flippy bit is loose enough that you can flick it open if you hold down the red button, making it incredibly satisfying to use.

Olfa make some awesome small craft knives with retractable blades though, my favourite is their stainless steel 30 degree blade. I like the long blade in the smaller light duty form factor, I use the full length a lot for scraping and long sweeping cuts.