Chefs knives: if you have a local cook shop, they may let you try things out, hold them, even chop things with them. Should feel nice in your hand, well balanced, not unwieldy. Sabatier is a good make, but they have a huge variety of different ones, so look around and see. You want to be spending a decent whack on your chefs knife. Sharpening - Japanese whetstone, as below.
Any other knife - unless you're doing significant amounts of fish filleting/meat prep: Victorinox. You want a couple of those little paring knives, and one of the little tomato knives (serrated) - sharp as a sharp thing, so watch your fingers. The little paring knives you can sharpen - I have a Japanese knife sharpening whetstone, YouTube for how to use. The serrated ones don't really sharpen, so when eventually they don't cut so well, replace.
For cutting bread - victorinox do a pastry knife that is the bee's knees. Honestly. I thought I couldn't cut bread - I couldn't, til I had that. Have bought them as presents for so many people too. Incredibly sharp to start with, so again, fingers.
Look after your knives. Don't just Chuck them in a drawer, always hand wash.
If you want links to anything, let me know.
I'm a chef, have worked in kitchens for 20+ years.