Middle: East/West FuriFX chopper - those 'scallop' holes create less friction so I use this knife for cutting birthday cakes and mincing garlic. Of course I wash my knife with soap after each use.
Right: My favourite knife. MAC damascus hand-folded steel vegetable chopper. It just feels sexy.
2nd Above: Flexible filleting knife; for filleting fish, frenching bones, trimming meat.
3rd knife: Global serrated bread knife. Good for bread and passionfruit - just watch your fingers you don't want to take out a finger with this knife. Trust me.
Bottom: Knife Honer. Not to be a called a knife sharpener. I will actually rarely use this; only on cheaper knives - using a whetstone to sharpen a blunt knife is better.
I also have 2 cleavers for mincing meat, breaking bones and gang fights.
So, which knife do you need? A couple of those paring knives (they're good steak knives, too) and that big chefs knife. That, and the skill to keep your knife sharp and you will feel like a professional, and cook like one too*.
* - may not necessarily cook like a professional